Simplify the expression.
4+9⋅2÷3−1

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.