Write the word phrase as an algebraic expression. Use x to represent the unknown number.7 times a number, minus 9
A. 7x - 9
B. 9x - 7
C. 7 - 9x
D. 9 - 7x
Answer: A
Mathematics
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Find the value of the expression.17 + 16 × 25 - (-13)
A. 71 B. 430 C. 838 D. 812
Mathematics
Solve the problem.The number of books in a small library increases according to the function B = 5100e0.03t, where t is measured in years. How many books will the library have after 8 years?
A. 8863 B. 3161 C. 7278 D. 6483
Mathematics
Perform the exponentiation. 19
A. 1.11111111
B. 9
C. 1
D. 
Mathematics
Solve the inequality. Write the solution in interval notation.x2 - 8x + 12 > 0
A. (6, ?) B. (-?, 2) C. (-?, 2) ? (6, ?) D. (2, 6)
Mathematics