In the city of springfield. 75% of
the parks have tennis courts. if 15 parks
have tennis courts, how many parks does
springfield have altogether?
(i found other answers but they used pls i’m dumb

20 parks

Step-by-step explanation:

Let the total number of parks be y.

Then 75% of y = 15 , that is

x y = 15

75y = 15 x 100

75y = 1500

divide through by 75

y = 1500/15

y = 20

Therefore Springfield have 20 parks altogether

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50