Question

Bethany sells roses and petunias.The expression 3r plus 2.5p gives the cost (in dollars) of r roses and p petunias.What is the cost of 7 roses and 8 petunias

Answer 1

the total cost of the petunias and roses is $41.

Answer 2

The total cost is $41.

Explanation:

The given expression is :

`3r+2.5p`

Now we know that the roses are represented by = r

And the petunias are represented by = p

So, we can say that each rose costs $3 (3r) and each petunia cost $2.5 (2.5p)

So, we can now find the total value of 7 roses and 8 petunias.

Cost of 1 rose = $3

Cost of 7 roses is =
`7*3=21`

Cost of 1 petunia is = $2.5

Cost of 8 petunias is =
`8*2.5=20`

Total cost of the flowers =
`21+20` = $41.