Nancy and Kevin collect coins. Nancy has x coins. Kevin has 8 coins fewer than 2 times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Kevin have.

2x+x-8

Step-by-step explanation:

Kevin is 2x-8

Nancy is x

2x-8+x

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.