Mason needs to purchase new glass for the window pictured here. How many square feet of glass will he need?

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

Witch represents the inverse of the function f(x)=1/4x-12

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics