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2 March, 05:15

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

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  1. 2 March, 08:50
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    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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