Determine whether the relation is a function.{(-5, -5), (-2, 2), (1, -8), (8, 1)}
A. Function
B. Not a function
Answer: A
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Provide an appropriate response.A small airline has 3 flights, A, B, and C, to each of 3 cities in Colorado. The matrix N represents the number of passengers carried in November, and matrix D represents the number of passengers carried in December. Write a matrix that shows the total number of passengers carried in these two months.
N = 
; D = 
What will be an ideal response?
Solve.Two cars leave a city and head in the same direction. After 3 hours, the faster car is 21 miles ahead of the slower car. The slower car has traveled 156 miles. Find the speeds of the two cars.
A. 54 mph and 61 mph B. 70 mph and 77 mph C. 52 mph and 59 mph D. 45 mph and 52 mph
Find the limit if it exists. 
What will be an ideal response?
Which of the graphs below could not possibly be the graph of a probability function f(x)?
A. graphs A and C B. graphs A and B C. graph B only D. graphs B and C E. none of these