Sara receives a 10% commission on the first $4000 in sales and 15% on all sales beyond $4000. If Sara receives a commission of $2530, how much did she sell?

Step-by-step explanation:

$4000(0.10) = $400

which is less than her paid commission

so we know that she sold more than $4000 worth

if s is sales above $4000

$2530 = 400 + 0.15s

$2130 = 0.15s

s = $14200

so total sales x is

x = $4000 + $14200 = $18200

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)

your answer is

a.

5

step-by-step explanation: