What is the simplest form of the expression (–12.7y – 3.1x) + 5.9y – (4.2y + x)?

OR

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Answer:

8

Step-by-step explanation:

An equation that represents the cost of a pizza will be C = 8 + 1.50x + 0.75y

• Fixed cost = $8
• Cost of additional inch = 1.50x
• Cost of additional topping = 0.75y

Total cost (C) will then be:

= 8 + (1.50 × x) + (0.75 × y)

C = 8 + 1.50x + 0.75y

Therefore, the equation to represent the cost is C =  8 + 1.50x + 0.75y

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Answer: , where 'x' denotes the number of additional inch to the pizza and 'y' denotes the number of additional toppings.

Step-by-step explanation:

Let 'x' denotes the number of additional inch to the pizza and 'y' denotes the number of additional toppings.

Given : A 10-inch cheese pizza costs  $8.

i.e. Fixed cost = $8

Each additional inch costs $1.50, and each additional topping costs $0.75.

∴ Cost of additional inch = $1.50 x

∴ Cost of additional topping = $0.75y

Then The Total cost of any pizza would be :

Total cost = Fixed cost + Cost of additional inch + cost of additional topping

= $8+ $1.50 x+$0.75y

⇒ Equation  that represents the cost of a pizza :

Answer:

it will last 18 days

Step-by-step explanation:

divide 42 by 2 1/3

2 1/3 = 7/3

42 / 7/3 =

42 * 3/7 =

126/7 = 18

if this isn't enough then here

The number of days it will take the dog to consume the 42 cup of food will be 18 days.

Total cups of dog food = 42 cups

Amount of cups consumed per day =

To obtain the number of days it will take to consume the entire food :

Divide the total amount of food by the amount consumed per day

Hence,

(42 ÷ (7/3))

Take the reciprocal of 7/3 and change the operation sign to multiplication

42 × 3/7 = (42 × 3) / 7 = 126 / 7 = 18 days

Therefore, it will take the dog 18 days to finish up the 42 cups of food.