Solve the problem.A custodian set up chairs for a lecture. There are 10 chairs in the first row, 13 chairs in the second row, 16 chairs in the third, and so on for 8 rows. Write the sequence that describes the number of chairs in each row. Find the total number of chairs set up for the lecture.
A. 10, 13, 16, 19, 22, 25, 28, 31; 164 chairs
B. 13, 16, 19, 22, 25, 28, 31, 34; 188 chairs
C. 10, 13, 16, 17, 18, 19, 20, 21; 134 chairs
D. 10, 13, 16, 19, 22, 25, 28, 31; 133 chairs
Answer: A
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.
A. 
B. ?
C. 0
D. 1
Solve the problem.The ratio of the distances a driver and a 2-iron will drive a golf ball is 5 to 4. If a golfer averages 233 yards with a 2-iron, how far should she average with a driver?
A. 242 yd B. 186 yd C. 224 yd D. 291.25 yd
Factor completely. If the polynomial cannot be factored, say it is prime.x2 + 6x - 27
A. (x - 3)(x + 9) B. (x + 3)(x + 1) C. (x + 3)(x + 9) D. prime
Write an equation that expresses the relationship. Use k as the constant of variation.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 72 ft from a light is 3.2 foot-candles, find the intensity on a screen 90 ft from the light.
A. 2.56 foot-candles B. 4 foot-candles C. 2.048 foot-candles D. 5 foot-candles