Express the number in scientific notation.An music album sells 519,000,000 copies.
A. 5.19 × 107
B. 5.19 × 10-7
C. 5.19 × 108
D. 5.19 × 106
Answer: C
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Find the y-intercept for the graph of the quadratic function.f(x) = 4x2 - 5x - 9
A. 
B. (0, -9)
C. (0, 9)
D. 
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = -2x4 + 9x3 - 4x2 + 8x - 3
A. 0 or 2 positive; 0, 2, or 4 negative B. 0, 2, or 4 positive; 0 negative C. 0, 2, or 4 positive; 0, 2, or 4 negative D. 0 or 2 positive; 0 or 2 negative
Find the relative extrema of the function. Find the relative extrema of trigonometric functions on [0, 2? ]. List your answers in terms of ordered pairs. Then sketch a graph of the function.
Write the expression as the logarithm of a single number or expression with a coefficient of 1. Assume all variables represent positive numbers.log 15 - log 5
A. log 
B. log 8
C. log 10
D. log 3