Sean has $100 and he buys 6 pairs of shoes for x dollars each. Amanda has $50 and buys 2 pairs of shoes for x dollars each. Which expression represents how much money altogether they have left?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1