Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.1 + 
= 
A. - 
, 
B. -6, 7
C. -7, 6
D. 6, 7
Answer: C
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Solve.If an earthquake measured 
on the Richter scale, what was the approximate intensity of the earthquake in terms of I0? The magnitude on the Richter scale of an earthquake of intensity I is 
A. 1,600,000 ? I0 B. 1300 ? I0 C. 13,000,000 ? I0 D. 16,000,000 ? I0
True or false?When using a truth table, the statement q ? p is equivalent to p ? q.
A. True B. False
Solve the problem.It takes 90 J of work to stretch a spring 1 m from its equilibrium position. How much work is needed to stretch it an additional 0.5 m?
A. 1462.5 J B. 292.5 J C. 562.5 J D. 112.5 J
Solve the problem.Find the maturity value of a loan of $3806 after 9 months. The loan carries a simple interest rate of 13% per year.
A. $4177.09 B. $4180.20 C. $4135.85 D. $4218.32