Flu has spread in school such that after x days, the number of sick students f(x) is given by f(x)=15x-x² where 0<or equal to x <or equal to 15. a. at what rate had flu spread after first day

b. when the flu has spread at the rate of 3 students per day, how many students where sick.

c. what is the value of x when f'(x)=0? Find the value of spread at this value of x interpret the value

d. what happens atfer the 10^th day

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

24

step-by-step explanation:

you just have to add the 15 + 9 to get 24

you do this bc you want to find the total of the whole line and those two numbers make up the line