Answer:
He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.
Step-by-step explanation:
After n consecutive serves, his total number of serves is going to be n+8, since he has already served 8 times. In the best case, his number of successful first serves is n+2.
His percentage of succesful first serves is the division of the number of succesful first serves divided by the total number of serves. So

We want
. So







He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.
His average speed is 634/13 = 48,77 miles/hour. Well, he's fast :D
Answer:
I like pikachu. I don't know how to do te rest though
Step-by-step explanation:
6x - 3y = 3 will be graph 1
4x - 2y = 8 will be graph 2
The first one seems more reasonable