Solve. Write the fraction in simplest form.Erika spent 
hr on her computer visiting the history channel and the discovery channel websites. She spent 
hr at the history channel website. How many hours did she spend at the discovery channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: A
Mathematics
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Solve the problem.Walt made an extra $9000 last year from a part-time job. He invested part of the money at 7% and the rest at 10%. He made a total of $750 in interest. How much was invested at 10%?
A. $7000 B. $4000 C. $4500 D. $5000
Mathematics
Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
Mathematics
Choose the best estimate from the list.28
+ 24
is approximately 52, 52
, 52
, 52
.
A. 52
B. 52
C. 52
D. 52
Mathematics
Find the opposite of the integer.7
A. -1 B. -7 C. 0 D. 7
Mathematics