The answer is 176 milles in 2 hours
A, C, and E.
you can check them by putting into y=mx+b form. if m is negative then as domain increases range decreases.
One-half of a number plus six will equal 20.
Solving:
1/2x + 6 = 20
-6 -6
1/2x = 14
*2/1 *2/1
x = 28 <--Answer to problem