Write the first five terms of the geometric sequence.a1 = 5; r = 4
A. 5, 20, 80, 320, 1280
B. 4, 20, 100, 500, 2500
C. 5, 9, 13, 17, 21
D. 20, 80, 320, 1280, 5120
Answer: A
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Solve.The winning times (in seconds) in a speed-skating event for men can be represented by the formula 
where x represents the year, with x = 0 corresponding to 1920. (For example in 1992, x would be 
According to the formula, what was the winning time in 1964? Round to the nearest hundredth.
A. 43.65 sec B. 42.71 sec C. 2057.26 sec D. 44.59 sec
Use the information given in the figure.
How many are in set A?
A. 37 B. 34 C. 35 D. 30
Factor completely. If prime, so state.x3 - 512
A. (x + 512)(x + 1)(x - 1) B. (x + 8)(x2 - 8x + 64) C. (x - 8)(x2 + 8x + 64) D. (x - 8)(x2 + 64)
Solve the quadratic equation by using the quadratic formula. If the equation has no real solutions, write "no real-number solutions."5x2 = -12x - 2
A. 
B. 
C. 
D. no real-number solutions