Solve.Julia preheated her oven for 19 minutes. What fraction of an hour was this? (1 hour = 60 min)

A.  hr
B.  hr
C.  hr
D.  hr

Answer: A

Mathematics

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Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.

A. 3
B.
C.
D.

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Perform the indicated operations and simplify the result so there are no quotients to complete the identity. -  = ?

A. sin ? tan ? B. 1 + cot ? C. -2 tan2? D. sec ? csc ?

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Solve the equation.5x(x + 5) = (4x + 7)(x + 5)

A. 5, -7 B. 7 C. -5, 7 D. -7

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Solve the compound inequality. Write the solution set using interval notation and graph it.-7x + 1 ? 15 or 3x + 3 ? -9

A. [-4, -2]

B. [-2, ?)

C. (-?, ?)

D. [-4, ?)

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Mathematics