Decide whether or not the set of ordered pairs defines a function.{(-3, -3), (-1, 5), (4, -7), (5, 3)}
A. Yes
B. No
Answer: A
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Solve the problem.Jack borrowed $320 from his brother. Jack's brother wants 6 monthly payments of $85 to repay the loan. How much extra is Jack's brother charging for the loan?
A. $510 B. $190 C. $105 D. $610
Solve.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 16 ft and the vertical clearance must be 12 ft at a point 14 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.A stack of poles has 26 poles in the bottom row, 25 poles in the next row, and so on, with 8 poles in the top row. How many poles are there in the stack?
A. 286 poles B. 315 poles C. 323 poles D. 331 poles
Divide, if possible. If a quotient is undefined, state so.45 ÷ (-45)
A. 
B. 0
C. -1
D. 1