:the cost of a new laptop is $750 which generates a sales tax amount of $37.50 . the sales tax was calculated based on the cost of the laptop. what is the sales tax rate?

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?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee