Find the first term a1 and the common difference d of the arithmetic sequence.-20, -25, -30, -35, . . .
A. a1 = -5, d = -10
B. a1 = -20, d = -5
C. a1 = -20, d = -15
D. a1 = -5, d = 5
Answer: B
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Add or subtract. Simplify if possible.
+ 
+ 
A. 
B. 
C. 
D. 
Find the domain and range of the function.F(t) = t2 + 5
A. D: (-?, ?), R: (-?, ?) B. D: [0, ?), R: (-?, 5] C. D: [-25,?), R: [5,?) D. D: (-?, ?), R: [5,?)
Find the probability.A sample of 4 different calculators is randomly selected from a group containing 10 that are defective and 31 that have no defects. What is the probability that at least one of the 4 calculators in the sample is defective?
A. 0.689 B. 0.311 C. 0.673 D. 0.100
The campus chapter of Habitat for Humanity spent several Saturdays building a house for a low income family. The Alpha, Beta, and Gamma club members volunteered. On the first Saturday the Alpha Club members worked 4 hours each, the Beta Club members worked 6 hours each, and the Gamma Club members worked 8 hours each. The combined person-hours of the three clubs totaled 232 hours. On the second Saturday the Alpha Club members worked 6 hours each, the Beta Club members worked 8 hours each, and the Gamma Club members worked 10 hours each. The combined person-hours of the three clubs totaled 306 hours. On the third Saturday the Alpha Club members worked 8 hours each, the Beta Club members worked 9 hours each, and the Gamma Club members worked 5 hours each. The combined person-hours of the
three clubs totaled 263 hours. Each club had the same number of volunteers working each Saturday. Find the number of members each club had working. What will be an ideal response?