Solve the problem.Last week, Samantha ran 11 miles. This week, she ran 9
miles. How much more did she run last week?
A. 1
miles
B. 20
miles
C. 12
miles
D. 1
miles
Answer: A
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Solve the problem.You have money in an account at 10% interest, compounded annually. To the nearest year, how long will it take for your money to double?
A. 6 years B. 4 years C. 7 years D. 10 years
Divide.
÷ 
A. - 
B. - 
C. - 
D. - 
Perform the subtraction visually using symbols. -9 - 2
A. -6 B. -7 C. -11 D. 7
Solve the problem.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. By using linear regression, the following function is obtained: 
where x is entering GPA and y is current GPA. Use this function to predict current GPA of a student whose entering GPA is 3.0. Round to the nearest hundredth. Entering GPA Current GPA 3.53.63.83.73.63.93.63.63.53.93.93.84.03.73.93.93.53.83.74.0
A. 3.76 B. 3.27 C. 3.56 D. 3.38