Question

Bethany sells roses and petunias. The expression 3r + 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

each rose is $3
7 roses so 7 x 3 = $21
each petunia is $2.50
8 petunias so 8 x 2.5 = $20
$21 + $20 = $41

hope this helps!