Find the period and amplitude of the function 
.
?
?
A. period: 
; amplitude: 
B. period: ; amplitude: 3
C. period:
; amplitude: 3
D. period:; amplitude: 6
E. period:
; amplitude: 3
Answer: C
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Evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 2 
+ C
Solve the problem. Round results to an appropriate number of significant digits.From a balloon 1028 ft high, the angle of depression to the ranger headquarters is 45.9°. How far is the headquarters from a point on the ground directly below the balloon?
A. 996 ft B. 991 ft C. 1001 ft D. 986 ft
Find the nth term of the geometric sequence with the given values.a = 3, r = -3, n = 12
A. 1,594,323 B. -177,147 C. -531,441 D. -4,782,969
Solve.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 105 foreign coins. Find how many coins Mary has.
A. 70 coins B. 35 coins C. 63 coins D. 14 coins