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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

Respuesta :

Step-by-step explanation:

Roses - Plug 7 into 3r to get 3(7)

Petunias - Plug 8 into 2.5p to get 2.5(8)

3r+2.5p

3(7)+2.5(8)

21+20

7 roses will cost 21$

8 petunias will cost 20$

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