Write the phrase as an algebraic expression. Let x represent the unknown number.Three times a number, decreased by 68
A. 3x - 68
B. x - 68
C. 3x + 68
D. 3(x - 68)
Answer: A
Mathematics
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Find the function value.Find f(-4x) when f(x) = 3x - 4.
A. 12x + 4 B. -12x + 16 C. 12x - 4 D. -12x - 4
Mathematics
Use Descartes' Rule of Signs to determine the possible number of positive and negative real zeros for the function. Then, use a graph to determine the actual number of positive and negative real zeros.P(x) = x7 + x4 + x2 + x + 8
A. possible: 1 or 3 pos, 0 neg
actual: 1 pos, 0 neg
B. possible: 0 pos, 1 neg
actual: 0 pos, 1 neg
C. possible: 0 pos, 1 or 3 neg
actual: 0 pos, 1 neg
D. possible: 0 pos, 2 or 0 neg
actual: 1 pos, 0 neg
Mathematics
Divide, if possible.-120 ÷ (-6)
A. 10
B. 
C. 20
D. -20
Mathematics
Match the graph to one of the polar equations.
A. r = 4 + cos ? B. r = 4 + sin ? C. r = 8 cos ? D. r = 8 sin ?
Mathematics