Timothy leaves home for skedunk 400 miles away. after 2 hours, he has to reduce his speed by 20 mph due to rain. if he takes 1 hour for lunch and gas, and reaches skedunk 9 hours after he left home, what was his initial speed?

Step-by-step explanation:

This problem is divided in two parts. The first part of the travel takes 2 hours and x miles at a unknown speed which we are gonna call . The second part takes 6 hours, because the total hours is 9, but the driver took 1 hour for lunch and gas. Also, during the second part, the driver decreased his speed in 20, so the speed for the second part is , and the distance covered is gonna be 400-x because we know that the total distance is 400 miles.

Next, we have to use the equation of a constant movement which involves speed, distance and time.

So, the distance covered during the first part is 2s.

But, we know that

Then,

Therefore, the initial speed is

function 2 has a greater rate of change than function 1

function 2 has a greater y-intercept than function 1

step-by-step explanation:

30 people weigh 160 pounds or more