Question

A florist has to pay $7.50 each time a customer chooses a competitor for the delivery of flowers. Which expression shows the amount that the florist earns if (p) people use a competitor for delivery, and the company makes $320.00 before any payment is made to their competitors? After substituting, what is the first step when evaluating (x + 3x - 4.2) when (x = 5)?

a) (320 - 7.5p); Subtract (4.2)
b) (7.5p - 320); Add (4.2)
c) (320 + 7.5p); Multiply by (5)
d) (7.5p div 320); Add (4.2)

Answer 1

The expression (320 - 7.5p) shows the amount that the florist earns if p people choose a competitor for delivery. To evaluate (x + 3x - 4.2) when x = 5, substitute the value of x and simplify the expression.

Step-by-step explanation:

The expression that shows the amount that the florist earns if p people use a competitor for delivery is (320 - 7.5p). To evaluate (x + 3x - 4.2) when x = 5, we substitute the value of x into the expression. So, we get (5 + 3*5 - 4.2) which simplifies to (5 + 15 - 4.2) = 15.8. Therefore, the first step when evaluating (x + 3x - 4.2) when x = 5 is to substitute the value of x.