Decide whether the set of ordered pairs is a function.{(2, -9), (2, -2), (4, -3), (8, 1), (11, 2)}
A. Function
B. Not a function
Answer: B
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Use a calculator to perform the indicated operation.14.56 + 50.5(23.9) - 3.65 ÷ 1.98 (round to two decimal places)
A. -1190.55 B. 1553.09 C. 1219.67 D. 615.08
Solve the problem.Peter must practice the piano 13
hours per week. He has already practiced 7
hours. How many more hours does he need to practice?
A. 4
hours
B. 5 hours
C. 6
hours
D. 5
hours
Solve the problem.A cyclist bikes at a constant speed for 16 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 21 miles. Find his speed.
A. 5 mph B. 7 mph C. 6 mph D. 4 mph
Find the slope-intercept form of the equation of a line that passes through the given points.(9, 0), (0, 3)
A. y = - 
x - 3
B. y = - 
x + 3
C. y = 
x + 3
D. y = - 3x + 3