Answer:
D. $3000
Step-by-step explanation:
Just did the test
(79 + 93 + 91 + 68 + x) / 5 = 80
(331 + x) / 5 = 80.....multiply both sides by 5
331 + x = 80 * 5
331 + x = 400
x = 400 - 331
x = 69 <=== he would have to make at least a 69
I think that it's 5 and a half hours.
Subtract $2125- $1500= $625
That means that you have $625 left to spend. If it's $125 per half hour. That's 5 half hours but equals out to 2.5 hours.
A and C do as the variable that is changing would be the exponent making it an exponential function