Question

Option 1: A flat salary of $2000 per month.
Option 2: A $500 stipend plus 10% of her monthly sales.

What would her monthly sales need to be to make Option 2 the better choice?

a. Her monthly sales must be at least $1500.
b. Her monthly sales must be less than $15000.
c. Option 2 will never be a better choice.
d. Her monthly sales must be more than $15000.

Answer 1

D

Answer 2

let her sale be x
we can find out in which time option 2 is higher than 1
\[2000\le 500+0.1x\]
so \[x \ge 1500\]

Answer 3

oh \[x \ge 15000\]

Answer 4

thanks for the explanation @AndrewNJ :)