Consider the table below x | y 0 | 3 1 | 6 2 | r what value r will make the table a representation of an exponential function? explain your answer

12

EXPLANATION

An exponential function is in the form y = f(x) = a · b^x

Given,

When x = 0, y = 3

When x = 1, y = 6

Therefore,

Since y = a · b^x

When x = 0, y = 3

3 = a(b^0)

Any value raised to the power of 0 = 1

Therefore a = 3

So the exponential function we are considering is rewritten as y = f(x) = 3 · b^x

Since y = 3 · b^x

When x = 1, y = 6

6 = 3 · b^1

6 = 3b

3b = 6

Divide both sides of the equation by 3

3b/3 = 6/3

b = 2

So the exponential function we are considering is rewritten as y = f(x) = 3 · 2^x

When x =2, y = r

To find the value of r

y = f(x) = 3 · 2^x

r = 3 · 2^2

r = 3 · 4

r = 12

Therefore, the value of r that will make the table a representation of an exponential function is 12

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: