Determine whether a function exists with set A as the input and set B as the output.
A. Yes
B. No
Answer: B
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Solve.An engineer uses the expression 
to describe the width of a rectangular steel plate she is designing for a machine. The expression 
describes the length. Write a rational expression for the difference of the width and the length.
A. 
- 
B. 
+ 
C. 
D. 
Use the given information to write an equation. Let x represent the number described in the exercise. Then solve the equation and find the number.The sum of four times a number and 8 is equal to the difference of twice the number and 10. Find the number.
A. 4(x + 8) = 2x - 10; - 21 B. 4x + 8 = 2x - 10; - 9 C. 4x + 8 = 2x + 10; 1 D. 4x + 8 = 2x - 10; 9
Evaluate.8x - 4y for x = 9 and y = 3
A. 68 B. 69 C. 60 D. 84
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.-3
- 5
A. 13
B. -13
C. 37
D. -37