Find the exact value of the expression.cos
A. 
B. 1
C. 
D. 
Answer: A
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Use factoring techniques to solve the equation.x2 + 20 = 9x
A. {-5, -4} B. {-5, 4} C. {5, -4} D. {5, 4}
Write the first five terms of the arithmetic sequence with the given values.a1 = 15, d = -5
A. 20, 15, 10, 5, 0 B. 10, 5, 0, -5, -10 C. 15, 10, 4, 0, -5 D. 15, 10, 5, 0, -5
Solve the problem.Gillian has $10,000 to invest in a mutual fund. The average annual rate of return for the past five years was 12.25%. Assuming this rate, determine how long it will take for her investment to double.
Fill in the blank(s) with the appropriate word(s).
Solve.Naftali and Sara wanted to compare the gas mileage they were getting. One particular week, Naftali drove 95.2 miles on 3.1 gallons of gas. That same week, Sara drove 182.5 miles and used 5.5 gallons of gas. Whose car got more miles per gallon of gas?
A. Naftali B. Sara C. They both got the same.