Question

Bethany sells roses and petunias. The expression 3 r + 2 . 5 p 3r+2.5p3, r, plus, 2, point, 5, p gives the cost (in dollars) of r rr roses and p pp petunias. What is the cost of 7 77 roses and 8 88 petunias?

Answer 1

For this case we have the following expression:

`3r + 2.5p`
Where,
r: number of roses
p: number of petunias
We want to find the cost of 7 roses and 8 petunias
Therefore, we must replace the following values:

`r = 7 p = 8`
Substituting the values in the given equation we have:

`3 * (7) + 2.5 * (8) = 41`
Answer:
the cost of 7 roses and 8 petunias is $ 41