Use the formula for Sn to find the sum of the first five terms of the geometric sequence.1, 3, 9, 27, . . .
A. 124
B. 122
C. 121
D. 131
Answer: C
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Estimate the value of the quantity.Joe wants to find out how far it is across the lake. His boat has a speedometer but no odometer. The table shows the boats velocity at 10 second intervals. Estimate the distance across the lake using right-end point values.
A. 3470 ft B. 3370 ft C. 337 ft D. 5000 ft
Rewrite the quadratic equation in the form ax2 + bx + c = 0, then identify a, b, and c. (5x + 1)(9x - 4) = -8
A. a = 45, b = 11, c = 12 B. a = 45, b = 11, c = -4 C. a = 45, b = -11, c = 4 D. a = 45, b = -11, c = -4
Completely factor the polynomial or state that the polynomial is prime.15x2 - 65x - 50
A. 5(3x + 2)(x - 5) B. prime C. (15x + 10)(x - 5) D. 5(3x - 2)(x + 5)
Solve the problem.Four boys and three girls are seated, in a row, at random, to watch a play. What is the probability thata) a girl is seated at each end of the row?b) one of the boys is seated in the middle seat?c) boys and girls are seated alternately?
A. a) 
b) 
c) 
B. a) 
b) 
c) 
C. a) 
b) 
c) 
D. a) 
b) 
c) 