Simplify.
A. -(x - 9)
B. -(x + 9)
C. 9x(x + 9)
D. x + 9
Answer: B
Mathematics
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Evaluate the function.f(x) = -8x - 1, find f(5)
A. 4 B. -40 C. -41 D. 41
Mathematics
Find the x- and y-intercepts for the equation. Then graph it.5x - 25y = 0
A. (0, 0), (0, 0)
B. (0, 0), (0, 0)
C. (0, 0), (0, 0)
D. (0, 0), (0, 0)
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.4x2 - x + 8 = 0
A. no real solution
B. 
C. 
D. 
Mathematics
Solve the problem.If two sound sources at the same volume are equidistant from a microphone, the pressure on the microphone is given by p = a cos ?1t + a cos ?2twhere a, ?1, ?2 are constants and t is time. Write p as a product of cosine functions.
What will be an ideal response?
Mathematics