Write the phrase as a mathematical expression. Use x as the variable.Some number increased by 80
A. 80
B. 80x
C. x + 80
D. x - 80
Answer: C
Mathematics
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Solve.The sum of the squares of the digits of a positive two-digit number is 20, and the tens digit is 2 more than the units digit. Find the number.
A. 53 B. 24 C. 35 D. 42
Mathematics
Solve the problem.If the series 
is integrated twice term by term, for what value(s) of x (if any) does the new series converge and for which the given series does not converge?
A. x = -2 B. x = -4, x = -2 C. x = -4 D. None
Mathematics
Evaluate the expression.
A. 362,880 B. 40,320 C. 336 D. 5040
Mathematics
Factor completely, if possible.u2 - 5u + 6
A. (u + 2)(u - 3) B. (u + 2)(u + 3) C. (u - 2)(u - 3) D. (u - 2)(u + 3)
Mathematics