Solve the problem.Write 390 out of 500 small colleges as a decimal and as a percent.
A. 0.78, 7.8%
B. 0.78, 78%
C. 0.78, 780%
D. 7.8, 780%
Answer: B
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Use scientific notation to solve the problem.Suppose that we could somehow capture all the energy released by the Sun in just one second. For how many years could U.S. energy needs be met by this energy? Assume that the annual energy generation of the Sun is 
joules and that U.S. annual energy consumption is 1 × 1020 joules. Give your answer in scientific notation.
A. 3.17 × 101.3 years B. 7.61 × 106 years C. 1 × 1014 years D. 3.17 × 106 years
Multiply and write answer in lowest terms.1
× 2
A. 3
B. 4
C. 2
D. 4
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 2, cos ? < 0Find cos 
.
A. -
B. 
C. - 
D. 
Find the indicated term.Find the 14th term of the arithmetic sequence 
A. 0.77 B. 0.71 C. -0.85 D. 0.78