Question

What is the value of a for the exponential function in the

graph represented in the form of f(x) = a(b)?
O -4
O -3
O 3
O 4

Answer 1

(D) 4

Explanation:

♥☺

Answer 2

Option (4)

Explanation:

If the given exponential function is in the form of f(x) =
`a(b)^x`

From the graph we find that two points (0, 3) and (0.5, 6) lie on the graph.

For (0, 3),

f(0) =
`a(b)^0`

3 = a

For (0.5, 6),

f(0.5) =
`3(b)^(0.5)`

6 =
`3√(b)`

`√(b)=2`

b = 4

Therefore, value of b in the given function 'f' is 4.

Option (4) will be the answer.