Multiply. Simplify if possible.
? 
? 
? 
A. 
B. 
C. 27
D. 
Answer: B
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Find the requested function value.f(x) = 8x + 4, g(x) = -7x2 + 5x + 1Find (g ? f)(-8).
A. 140 B. -25,499 C. 121 D. -3892
Find the range for the data set.319, 319, 319, 319, 348
A. 319 B. 29 C. 667 D. 32
Rewrite the number as a product of a whole number and a power of 10.5760
A. 5760 ? 101 B. 576 ? 102 C. 576 ? 101 D. 576 ? 100
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 780. Find a linear function, S(t), which fits this data, and which expresses score as a function of time. Use this function to predict an average score for persons taking a 53-hour review course. Round your answer to the tenths place.
A. 726.0 B. 704.7 C. 712.0 D. 716.2