Question

Bethany sells roses and petunias. The expression 3r+2.5p3r+2.5p3, r, plus, 2, point, 5, p gives the cost (in dollars) of rrr roses and ppp petunias. What is the cost of 777 roses and 888 petunias? \$$dollar sign

Answer 1

Answer: The cost of 7 roses and 8 petunias is $41.

Explanation:

Given, Bethany sells roses and petunias. The expression
`3r+2.5p`, gives the cost (in dollars) of r roses and p petunias.

Now to find the cost of 7 roses and 8 petunias , put r= 7 and p= 8 in the above expression , we get

`3(7)+2.5(8)=21+20\\\\=41`

Hence, the cost of 7 roses and 8 petunias is $41.