Solve the quadratic inequality. Graph the solution.t2 - 4t - 21 ? 0

A. [7, ?)

B. (-?, -3]

C. (-?, -3] ? [7, ?)

D. [-3, 7]


Answer: D

Mathematics

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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 

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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

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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

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Determine if the function is a power function. If it is, then state the power and constant of variation.f(x) = 0 ? x6

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Mathematics