What function equation is represented by the graph? a. f(x)=4x+4 b. f(x)=4x+5 c. f(x)=3x+5 d. f(x)=3x+4

D. f(x)=3^x+4

Step-by-step explanation:

The graph crosses the y axis at 5 so the y intercept is 5

Anything to the zero power is 1

A. f(0)=4^0+4  = 1+4 =5

B. f(0)=4^0+5 =1+5 =6

C. f(0)=3^0+5 =1+5 =6

D. f(0)=3^0+4=1+5 =5

We can eliminate choices b and c

A. f(x)=4^x+4

D. f(x)=3^x+4

Let x = 2, y = is between 12 and 14

A. f(2)=4^2+4=16+4 =20

D. f(2)=3^2+4=9+4 = 13

So A is eliminated

D. f(x)=3^x+4

Step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b