Answer:
You need to know your math!
Step-by-step explanation:
If your gonna start a business you have to know your math, sure you can hire people but people work for cash, so when you start out on your own with your business you need to know your math so you can keep the business running. Hope this helps! :)
Answer:
f(9)=54
Step-by-step explanation:
Subsitute 9 for x in f(x)=6x

Answer:
$3.72
Step-by-step explanation:
Divide $2.79 by 3
$0.93 is the price of one orange
$0.93 times 4 is $3.72
Hope this helps!
Number 15 is 80 i dont know about the others...sorry