8. The Wu family booked a flight from Boston, Massachusetts to Dallas, Texas, Boston is 2,493 km from Dallas. If the flight takes 3 hours, what is the average speed of the plane?
A 731 km per hour
B. 831 km per hour
C. 2.490 km per hour
D. 7.479 km per hour

What expression is equivalent to 42x-56y

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1