Change the word phrase to an algebraic expression. Use x as the variable to represent the number.Two times a number
A. 
B. 2 - x
C. 2 + x
D. 2x
Answer: D
Mathematics
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Determine whether the improper integral converges or diverges.
A. Converges B. Diverges
Mathematics
Determine whether the function is invertible.The function that pairs students' ID numbers with their GPAs.
A. Yes B. No
Mathematics
Perform the indicated operation.13 + (-25)
A. 38 B. 12 C. -12 D. -38
Mathematics
Solve. Round to the nearest tenth, if necessary.Find the amount of increase and the percent increase if the original amount is 260 and the new amount is 338.
A. 78; 40% B. 78; 30% C. 78; 130% D. 78; 25%
Mathematics