Write 4:1 in the form 1:n

1:0.25

Step-by-step explanation:

To get the left from 4 to 1 we have divided by 4. This means we also have to divide the right side by 4. 1/4 = 0.25

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !