A florist sells two dozen roses for $50.88. At this rate what's the cost per rose? A. $25.44 B. $0.12 C. $2.12 D. $21.20

Answers

Answer 1

Answer: 1 dozen = 12
2 dozen = 24

24 roses for $50.88

$(50.88)/(24)$ = $2.12

1 rose = $2.12

Answer is: C. $2.12

Answer 2

Answer: C.2.12 two dozen is 24 cause a dozen is 12 so add 2.12 24 times or multiply then you will get $50.88

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Mrs. Eaton's class is participating in the "Box Tops for Education" campaign. On the first day, herclass collected 2 tops. On the third day, her class collected 8 tops. Let D represent each collection
day and N represent the number of tops collected on that day.
Based on the situation, John claims the number of tops collected can be modeled by an exponential
function. Riley disagrees and claims the number of tops can be modeled with a linear function. What
is the number of tops collected on the sixth day based on the exponential model? What is the
number of tops collected on the sixth day based on the linear model?

Answers

The exponential model would take the form:
$y=Ae^(kt)$
A, the initial value is 2, we will use 3 days and 8 tops to find k, or the rate.
$8 = 2e^(k*3)$
$k = (ln(4))/(3)$

Now, plugging in 6 days:
$y = 2e^{ (ln(4))/(3)*6}$
$y = 32$

The linear would take the form:
y = mx+b
First the slope would be: (8-2)/(3-1) = 3
And to find b we could plug in the point (8,3):
8 = 3(3)+b
b = 8-9
b = -1
y = 3x-1
At x=6
y = 3(6)-1
y = 17

Thus, the exponential is almost double the result of the linear! Hope that helps.

Answer:

Step-by-step explanation:

for the exponential it is actually 64

(–x2 + 9) + (–3x2 – 11x + 4)=

Answers

-4x 2-11+13 is the answer of the equation

If you give me 70 coins I will have three times as much money as you, but if I give you 70 coins, then you will have five times as much as me. How many coins do we each have?

Answers

Answer:

I have 110 coins, you have 130 coins

Step-by-step explanation:

I have x coins and you have y coins.

According to question we set the following equations.

If you give me 70 coins I will have three times as much money as you:

x + 70 = 3(y - 70) ⇒ x + 70 = 3y - 210 ⇒ x = 3y - 280

If I give you 70 coins, then you will have five times as much as me:

y + 70 = 5(x - 70) ⇒ y + 70 = 5x - 350 ⇒ y = 5x - 420

Solve by substitution:

y = 5(3y - 280) - 420
y = 15y - 1400 - 420
15y - y = 1820
14y = 1820
y = 1820/14
y = 130

Find the value of x:

x = 3*130 - 280
x = 390 - 280
x = 110

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