Solve the problem.John does 12 pushups on the first day of a 30-day month, and then increases the number of pushups by 2 pushups a day. How many pushups has he done by the end of the month?
A. 1218
B. 1260
C. 1230
D. 1290
Answer: C
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Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 791. Find a linear function S(t), which fits this data, and which expresses score as a function of time.
A. S(t) = 3.8475t - 495.75 B. S(t) = -4.275t + 491.75 C. S(t) = 3.8475t + 495.75 D. S(t) = 4.275t + 491.75
State the domain of the rational function.g(x) = 
A. (-?, ?) B. (-?, 0) ? (0, ?) C. (-?, -4) ? (-4, ?) D. (-?, 4) ? (4, ?)
Rationalize the denominator. 
A. 
B. 
C. 
D. 
Fill in the blank with one of the words or phrases listed below.
Two algebraic methods for solving systems of equations are 
and 
.
A. consistent, inconsistent B. addition, solution C. substitution, dependent D. addition, substitution