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? $\square$

Explanation:

Step1: Identify values of r and p

Here, \( r = 7 \) (roses) and \( p = 8 \) (petunias).

Step2: Substitute into the expression

Substitute \( r = 7 \) and \( p = 8 \) into \( 3r + 2.5p \):
\( 3(7)+2.5(8) \)

Step3: Calculate each term

First term: \( 3(7)=21 \)
Second term: \( 2.5(8) = 20 \)

Step4: Add the results

\( 21 + 20 = 41 \)

Answer:

41