Question

Select the function that is best modeled by the following table x-0, 1, 2, 3. f(x)-2, 4, 8, 16?

A. f(x)=2*0.5^x
B. f(x)=0.25^x
C. f(x)=2*2^x
D. f(x)=4*0.25^x

Which of the following equations has the solution X=3 ?

2^X+6=4^3

3^3=9

4^2X+1=4^X+4

3^X=3


select the expression equal to 32b4/5.

a. 2b^4

b. 2^5/b^4

c. 32^5/b^4

32^4/b^5

Answer 1

Select the function that is best modeled by the following table x-0, 1, 2, 3. f(x)-2, 4, 8, 16?

A. f(x)=2*0.5^x

B. f(x)=0.25^x

C. f(x)=2*2^x

D. f(x)=4*0.25^x

The values are (0,2) , (1,4) , (2,8) and (3,16)

The rate of change is
`(4)/(2) =(2)/(1)= 2`

and initial value is at x=0 , which is y=2

So the function is given by

`C. f(x)=2*2^x`