Subtract and simplify. Write the answer as a mixed number if possible.18
- 5
A. 12
B. 13
C. 12
D. 12
Answer: D
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Use a calculator with a 
key or a 
key to solve the problem.The exponential function 
describes the price P, in dollars, of a movie ticket in a local cinema in year x, assuming a yearly inflation rate of 
What was the original ticket price (year 0)? What will the price be in year 9?
What will be an ideal response?
Solve the problem.A force is given by the vector F = 6i + 4j. The force moves an object along a straight line from the point (6, 8) to the point (20, 14). Find the work done if the distance is measured in feet and the force is measured in pounds.
A. 92 ft-lb B. -108 ft-lb C. 60 ft-lb D. 108 ft-lb
Determine the function value.Suppose f(x) = logax and f(4) = 2. Find f 
.
A. 
B. 4
C. -2
D. -4
Solve the system of linear equations.9x + 7y = -195x - 4y = -50
A. (-6, 6) B. No solution C. (-6, 5) D. (-7, 6)