Please help me and explain so I can do the rest on my own.

f(x) = 5

Step-by-step explanation:

Given the exponential form of the data is

f(x) = a ×

To find a and b use the points from the table

Using (0, 5), then

5 = a × → = 1, thus

5 = a

Using (1, 8), then

8 = 5 × = 5b ( divide both sides by 5 )

= b

Thus exponential function is

f(x) = 5 ×

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21

1/4 is the answer if i recall correctly.