Solve the quadratic inequality. Graph the solution.t2 - 4t - 21 ? 0
A. [7, ?)
B. (-?, -3]
C. (-?, -3] ? [7, ?)
D. [-3, 7]
Answer: D
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Solve the problem.A bike road race starts at an elevation of 920 feet and passes through 5 stages where the elevation changes by -42 feet, 296 feet, 599 feet, 433 feet, and -708 feet. At what elevation does the race end?
A. -2998 feet B. 1498 feet C. 391 feet D. 2998 feet
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log7 73
A. 21 B. 1 C. 7 D. 3
Express the number in scientific notation.0.00008516
A. 8.516 × 104 B. 8.516 × 10-5 C. 8.516 × 10-4 D. 8.516 × 105
Determine if the function is a power function. If it is, then state the power and constant of variation.f(x) = 0 ? x6
A. Not a power function B. Power is 6; constant of variation is 0 C. Power is 0; constant of variation is 6 D. Power is 6; constant of variation is 1