Solve.George bought a video for $21.92. If he paid with two $20 bills, what was his change?
A. $19.08
B. $18.18
C. $19.00
D. $18.08
Answer: D
Mathematics
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Solve. Write the answer as a mixed number in simplest form.A patient in rehabilitation walked on a treadmill 7
miles over 3 days. How many miles is this per day?
A. 2
mi
B. 7
mi
C. 2
mi
D. 22
mi
Mathematics
Simplify the expression.
A. 
B. 4x
C. 
D. x 
Mathematics
Find the root. Assume that variables represent nonnegative values.
A. 4a2
B. 4
C. 256a
D. 4a
Mathematics
The function 
is a model of the exponential population growth of house mice, where t is time in years, and y is the population of the mice. Predict the population of the mice after 8 months.
A. 9 mice B. 32 mice C. 8 mice D. 64 mice E. None of these
Mathematics