James can jog twice as fast as he can walk. he was able to jog the first 9 miles to his grandmother’s house, but then he tired and walked the remaining 1.5 miles. if the total trip took 2 hours, then what was his average jogging speed?

Let the speed of walking of James = x mile/hour

            speed of jogging = 2x mile/hour

9/2x + 1.5/x = 2

or, (9 + 3)/2x = 2

or, 12 = 4x

or, x = 3

Average speed of walking = 3 mile/hour

Average speed of jogging = 2 * 3 = 6 mile/hour

the correct answer is d

hope this

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.