Simplify the radical expression.
A. 7
B. -49
C. -7
D. not a real number
Answer: C
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Solve the application.June's new car gets 19.6 miles per gallon and the gas tank holds 18.5 gallons. How many miles can her car travel on one tank of gas?
A. 38.1 mi B. 362.6 mi C. 1087.8 mi D. 1.059 mi
Solve.- 
x + 2x = 
x + 
A. 
B. {0}
C. 
D. {18}
Factor out the negative sign with the GCF.-6s4t2 - 2s2t3
A. -s2t2(6s + 2t) B. -2s4t3(3s2 + t) C. -2s2t2(3s2 + t) D. -2s2t(3s + t)
Use a proportion to solve the problem.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average, ERA. For example, if a player gave up 90 earned runs in 250 innings during one year, his ERA is found by solving the proportion 
Find the ERA for a player who, in one year, gave up 105 earned runs in 236
innings. Round your answer to the nearest hundredth.
A. 2.25 B. 20.29 C. 3.99 D. 11.67