Mari used a thermometer to record tempatures of -3.4 celsius and 1.6 celsius. what is the difference between both of the tempatures Mari recorded?

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project