A photo is printed on a 20-inch by 24-inch piece of paper. The photo covers 320 square inches and has a ubiform border. What is the width of
the border?

2 in.

Step-by-step explanation:

Given

Dimension of photo frame is

If the photo cover an area of

Suppose x be the width of border

Therefore dimension of frame without border is

And must be equal to

So,

Thus there are two values of x out of which is not valid because it is not feasible

thus width of border is

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

answer4 to the second power is 16

and 4 to the third power is 64,