Roger gets $40 per day as wages and $4.50 as commission for every pair of shoes he sells in a day. His daily earnings goal is $112. Write an equation and solve.

he bought 16 pairs of shoes

Step-by-step explanation:

...

y=4.5x+40

16 pairs of shoes

Step-by-step explanation:

Let the target earnings be represented by y and the number of pairs of shoes that Roger sells be x hence

y=4.5x+40

The equation is therefore, y=4.5x+40.

To solve this equation, substitute the value of y with 112 hence

112=4.5x+40

4.5x=112-40=72

x=72/4.5=16

Therefore, Roger should sell 16 pairs of shoes to achieve his target earnings of $112