Find all square roots of the number.49
A. ±9
B. ±8
C. ±7
D. ±14
Answer: C
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Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.5x < 15 and x + 5 > 2
A. ?
B. (-?, -3) ? (3, ?)
C. [-3, 3]
D. (-3, 3)
Solve the problem.A life insurance company uses the following rate table for annual premiums for women for term life insurance. Use a graphing utility to fit the data with an exponential function in the form A = A0ekt. Round the values to the nearest thousandth. Then, use the function to predict the annual premium, to the nearest dollar, for a woman 70 years old. 
A. y = -3644.854 + 1023.386 ln x, $703 B. y = 8.944e0.068x, $1044 C. y = 8.944e0.068x, $1467 D. y = -3644.854 + 1023.386 ln x, $773
Write the number in scientific notation.7,400,000
A. 7.4 × 10-6 B. 7.4 × 106 C. 7.4 × 10-7 D. 7.4 × 107
Assuming all variables are positive, use properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms.ln x3y4
A. ln (3x)+ ln (4y) B. 3ln x + 4ln y C. ln (3x) ? ln (4y) D. ln x3 ? ln y4