Simplify the expression.
A. 0.324
B. 0.0324
C. 3.24
D. 0.00324
Answer: B
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 9
B. 
; 
C. 
; 
D. 
; 9
Find the present value for the given future amount. Round to the nearest cent.A = $19,200, 9 years r = 6% compounded annually
A. $12,046.32 B. $7835.55 C. $32,438.00 D. $11,364.45
Perform the indicated operation.(-2m2 - 4m - 7) - (2m2 + 4m + 2)
A. -5 B. -4m2 - 8m - 9 C. -4m2 + 8m + 9 D. -4m2 - 5
Solve the problem using Snell's Law: 
= 
.A light beam in air travels at 2.99 × 108 meters per second. If its angle of incidence to a second medium is 85° and its angle of refraction in the second medium is 75°, what is its speed in the second medium (to two decimal places)?
A. 3.08 × 108 mps B. 2.89 × 108 mps C. 2.90 × 108 mps D. 2.98 × 108 mps