Solve the equation.(ex)x ? e21 = e10x
A. {7}
B. {3}
C. {-3, -7}
D. {3, 7}
Answer: D
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Write the sum without sigma notation and evaluate it.
A. 2 cos ? + 2 cos 
+ 2 cos 
+ 2 cos 
= 3 + 
B. 2 cos ? + 2 cos 
+ 2 cos 
+ 2 cos 
= -2 + 
+ 
C. 2 cos ? + 2 cos 
+ 2 cos 
+ 2 cos 
= -1 + 
D. 2 cos ? + 2 cos 
= -2 + 
Solve the problem.At age 30, John invested $49,000 in the stock market. By age 35 his investment had grown to $53,000. If the market continues to grow at the same rate, how much will be in his account when John is 39? Round to the nearest dollar.
A. $56,200 B. $53,001 C. $57,000 D. $52,201
Solve the problem.Find the amount of money in an account after 7 years if $4400 is deposited at 8% annual interest compounded monthly.
A. $7688.66 B. $7619.38 C. $7660.51 D. $7540.83
Find the exact values of the indicated trigonometric functions. Write fractions in lowest terms.
Find sin B and tan B.
A. sin B = 
; tan B = 
B. sin B = 
; tan B = 
C. sin B = 
; tan B = 
D. sin B = 
; tan B = 