The gas mileage m(x)(in mpg) for a certain vehicle can be approximated by m(x)= -.02x^2+2.688x-35.012, where x is the speed of the vehicle in mph. a) determine the speed at which the car gets its maximum gas mileage
b) determine the maximum gas mileage

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?