Idk sorry !!!!!!!!!!!!!! Add them
The area is Base * Height
Area = b * h
b =12 3/4 in
h = 2 1/2 in
Area = 12.75 * 2.5 = 31.875 or 31 7/8 square inches.
Answer: 
Step-by-step explanation:
The area of a rectangle can be found with the following formula:

Where "l" is the length and "w" is the width.
In this case you can identify in the figure given in the exercise that:

You know that the area of that rectangle is the following:

Therefore, knowing those values, you can substitute them into the formula and then you must solve for "x" in order to find its value. You get that this is:

She can ride a bike 7 miles per hour
12multipliedby40tothedegreepowerwhichletsthemshowthatyoucansubtractanotherby12.sorryspacrbuttonisntworking