MAT/117 MAT117 MAT 117 WEEK 8 QUIZ

MAT/117 MAT117 MAT 117 WEEK 8 QUIZ

1.
Given the function f(x)=9x+7f(x)=9x+7, find its inverse.
•	 
f−1(x)=(x−9)7f−1(x)=(x−9)7
•	 
f−1(x)=x9−7f−1(x)=x9−7
•	 
f−1(x)=(x−7)9f−1(x)=(x−7)9
•	 
f−1(x)=x7−9f−1(x)=x7−9
2.
Simplify the logarithm log2(64)log⁡2(64). Select the correct solution.
•	 
66
•	 
6464
•	 
6262
•	 
3232
3.
Select the first five terms in the arithmetic sequence an = 6n, starting with n =1. 
•	 
{, , , , }
•	
{1, 2, 3, 4, 5}
•	 
{7, 8, 9, 10, 11}
•	 
{6, 12, 18, 24, 30}
4.
Select the first five terms in the geometric sequence an=(2)n−1an=(2)n−1, starting with n=1n=1.
•	 
{2,4,8,16,64}{2,4,8,16,64}
•	 
{1,2,4,8,16}{1,2,4,8,16}
•	 
{1,2,4,6,8}{1,2,4,6,8}
•	 
{2,4,6,8,10}{2,4,6,8,10}
5.
Select the sum of the series. ∑5k=1k2∑k=15k2
•	 
5555
•	 
5656
•	 
200200
•	 
 225



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