Answer:
C) f(x)=2(25)x
For question 4: f(x)=4()^x
Step-by-step explanation: The correct answer from the choices listed above is option C. IT would be f(x) = 2(25)x that is an equivalent function to f(x) = 2(5)^2x. You can square directly 5 since it will still follow the rules for exponents.
Answer:
220 Miles
Step-by-step explanation:
This is because one mile is 22 gallons since 88/4 is 22. With this new info, we take 22 and times it by 10 to get 220 miles.
Answer:
$75
Step-by-step explanation:
let the original price be x
then,
80% of x = 60
80/100 of x = 60
therefore x = 75
C. -10
(20+2x)/(5-x)
Multiply both sides by lowest common denominator, simplify

2x + 20 = 0
2(x + 10) = 0
factor out 2 from 2x+20