If f(x) = 2x2 1, what is f(x) when x = 3? a 1 b 7 c 13 d 19 9 of 50

Answer:

Option 1.

Step-by-step explanation:

The given function is

We need to find the average rate of change of the function from x = 1 to x = 3.

At x=1,

At x=3,

The average change of a function f(x)on the interval [a,b] is

The average rate of change of the function from x = 1 to x = 3 is

The average rate of change of the function from x = 1 to x = 3. Therefore the correct option is 1.

Answer:

The correct answer is A.

Final answer:

The cardinal number of the set C = {x | 25 < x ≤ 50}, containing integers greater than 25 and up to (including) 50 is 25 as it represents the total number of integers within these conditions.

Explanation:

The set C = {x | 25 < x ≤ 50} denotes the set of all integers that are greater than 25 and less than or equal to 50. When we calculate these values, we get the numbers 26 through to 50. This gives us a total of 25 different values (or integers). So, the Cardinal number of the set C, which stands for the number of elements in the set, is 25. Therefore, the correct option is C) 25.

or

The set C = {x | 25 < x ≤ 50} represents all values of x that are greater than 25 and less than or equal to 50. We can count the number of integers within this range to find the cardinal number of the set.

Step 1: Subtract the lower bound from the upper bound and add 1: 50 - 25 + 1 = 26

Therefore, the cardinal number of the set C is 26.

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Final answer:

After subtracting the initial 5-minute cost from the total balance and dividing by the cost of additional minutes, you would have about 24 minutes remaining on your long-distance calling card when rounding to the nearest whole number.

Explanation:

To solve how many minutes you have remaining on your long-distance calling card, you'll first need to subtract the cost of the first 5-minute period from your total balance, which gives you $12.00 - $4.25 = $7.75.

Next, you would divide this amount by the cost of each additional minute which is $0.40. This calculation ( $7.75 / $0.40 ) results in a total of approximately 19.375 minutes.

Therefore, since you already have 5 minutes from the initial payment, you would add these two values together (5 + 19 = 24 minutes). But, according to the task you need to round your answer to the nearest whole number. As such, you can say you have approximately 24 minutes left on your card.

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Final answer:

To determine the number of minutes remaining on the calling card, subtract the cost of the first 5 minutes from the remaining balance and divide by the additional cost per minute. You have approximately 19 minutes remaining on the calling card.

Explanation:

To determine the number of minutes remaining on the calling card, we need to subtract the cost of the first 5 minutes from the remaining balance and then divide the result by the additional cost per minute.

1. 
   
2. Subtract the cost of the first 5 minutes ($4.25) from the remaining balance ($12.00): $12.00 - $4.25 = $7.75.
3. 
   
4. Divide the result by the additional cost per minute ($0.40): $7.75 ÷ $0.40 ≈ 19.38 minutes.
5. 
   
6. Round the result to the nearest whole number: 19.38 ≈ 19 minutes.

Therefore, you have approximately 19 minutes remaining on the calling card.

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Answer:

31.2

Step-by-step explanation:

To work out 60% of 52 you would first need to find 10%. You can do this by dividing 52 by 10, this gives you 5.2.

The final step is to multiply 5.2 by 6, this gives 31.2. This is because in order work out 60% you multiply 10% by 6.

1) Divide 52 by 10.

2) Multiply 5.2 by 6.

Answer:

x + 60 < 221; at most 161 pounds.

Step-by-step explanation:

your welcome :)