Simplify. Leave the answer in exponent form.
A. 154
B. 38.5
C. 77
D. 774
Answer: C
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Solve the logarithmic equation.ln x - ln (x - 7) = ln 5
A. -2
B. 
C. No solution
D. 
Find the measure of the indicated angle.The angle's measure is 20° more than triple that of its supplement.
A. 85° B. 140° C. 130° D. 95°
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.The Smale family paid 21% of the purchase price of a $257,000 home as a down payment. Determine the amount of the down payment.
A. $53,970 B. $12,238 C. $540 D. $5,397
Solve. Graph the solution on a number line, and express it in interval notation.5x < 20
or
x + 4 ? 14
A. x > 4, (4, ?)
B. x < 4 or x ? 10, (-?, 4) ? [10, ?)
C. x ? 10, (-?, 10]
D. x ? -10 or x > 4, (-?, -10] ? (4, ?)