Evaluate the integral.
A. 84
B. 112
C. 56
D. 42
Answer: C
Mathematics
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Solve the problem.It costs $43 per hour plus a flat fee of $15 for a plumber to make a house call. Find a linear function 
whose input is the number of hours that the plumber works and whose output is the corresponding cost for the house call.
A. f(x) = 15x + 43 B. f(x) = 43x C. f(x) = 15x D. f(x) = 43x + 15
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.42 + 83 + 124 + . . . + 329
A. 
B. 
C. 
D. 
Mathematics
Evaluate the determinant.
A. 8 B. -8 C. 172 D. -16
Mathematics