Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Answer: B
Mathematics
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Find the exact value of the expression.
A. 
B. 
C. - 
D. - 
Mathematics
Solve the problem using a system of equations.Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 250 miles in the same time that Dana travels 220 miles. If Chuck's rate of travel is 6 mph more than Dana's, then at what rate does Chuck travel?
A. 52 mph B. 44 mph C. 48 mph D. 50 mph
Mathematics
Evaluate the sum. Round to the nearest hundredth, if necessary.
A. 21 B. 15 C. 20 D. 11
Mathematics
Solve.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 114, 143, 196 B. 119, 156, 209 C. 106, 143, 196 D. 106, 143, 172
Mathematics