Answer to Question #57032 in Algebra for Jeff

Question

6: Which of the following functions have a domain of (-∞,∞) and a range of (2,∞)
Check all that apply.

f(x) = 0.25^x -2
f(x) = 3^x -2
f(x) = 0.25^x + 2
f(x) = 3^x + 2

7: What is the sum of the first five terms of the geometric sequence in which a1 = 3 and r = 1/3?
Express your answer as an improper fraction using the slash(/) key and no spaces._______


8: The original purchase price of a car is $12,000. Each year, its value depreciates by 5%. Three years after the purchase, what is the value of the car?

A: $1.50
B: $13,891.50
C: $10,830
D: $10,288.50


9: Which of the following sequences are geometric?
Check all that apply

6,18,54,162,486

2,5,8,11,14,17

-4,-2,-1,-0.5,-0.25,-0.125

2,3,5,8,13,21