Mary says that 2−3 is equal to −8. Explain what Mary is doing wrong.

What is the common difference in the following arithmetic sequence 7,3,-1,-5

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field