I believe the answer is .09625 hours
Explanation: first you do 2.2 x 105= 231
Then you do 231/40=5.775 to get how many minutes it takes to type 231 words. Then u divide 5.775/60 to get how many hours it would take.
You have to plug in a random y value and use algebra to solve for x. It is impossible to do without at least one point for y.
7392 rounded to the nearest hundred is 7400