Solve the problem. Use the correct number of significant digits.A computer can do one calculation in 1.4 × 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.4 × 106 sec
B. 1.4 × 10-7 sec
C. 1.4 × 1012 sec
D. 1.4 × 105 sec
Answer: D
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Solve the problem.A skeet shooter starts parallel to the horizon, rotates 171° counterclockwise and fires a skeet at 5.5 mph. To the nearest tenth, what are the components of the skeet's velocity?
A. 0.9 mph, -5.4 mph B. -170.2 mph, -16.4 mph C. 170.2 mph, 16.4 mph D. -0.9 mph, 5.4 mph
Find the phase shift of the function.y = sin 
A. 
units up
B. 
units to the left
C. 
units to the right
D. 
units down
For f(x) = A sin 
+ D,identify either A, B, C, or D as indicated for the sine function.y = cos 
Find C.
A. 
B. - 
?
C. 
?
D. - 
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.80a2 + 80a - 25
A. 5(4a + 5)(4a - 1) B. (20a + 25)(4a - 1) C. 5(4a - 5)(4a + 1) D. (4a + 5)(20a - 5)