Combine. Assume that all variables represent non-negative real numbers.14
+ 10
A. -4
B. 24
C. 24
D. 24
Answer: B
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Combine like terms, if possible.9a - 2a + 7
A. -7a + 7 B. 7a + 7 C. 14a D. Cannot be simplified
Find the solution to the system of equations by the substitution method.
A. (5, 7) B. (4, 8) C. (-4, 7) D. (8, 4)
Solve.The current in amps I drawn by an appliance in the home can be approximated using the formula I = 
,where P is the power measured in watts and R is the resistance measured in ohms. What is the current I if 
watts and 
(Round to three decimal places, if necessary.)
A. 7.071 amps B. 11.314 amps C. 5.657 amps D. 6.891 amps
Solve the problem.Bill can row 3 mph in still water. It takes him 3 hours 36 minutes to go 3 miles upstream and return. Find the speed of the current.
A. 3 mph B. 2.5 mph C. 2 mph D. 1.5 mph