Answer:
x≥13
Step-by-step explanation:
Hello
I think I can help you with this
step 1
Lets see how much money jon earns per week
$180 (always, it does not depend on the sales)
$25 for each sale=25* sale
$25*number of sales
earning= $180+$25*number of sales
Let
earnings=e
number of sales=x
(1)e=$180+$25x
Step 2
make the inequality
he need to earn at least $500, that is the same that $500 or more ($500.∞)
(2)e≥500
mixing (1) and (2)
$180+$25x ≥$500
x can be isolated
$25x ≥$500-$180
$25x ≥$320
x≥320/25
x≥12.8
he can not make 0.8 sales , so he needs 13 sales or more.(13,∞)
Have a great day
