SHOPPING Ramos went to a pizza shop and spent half of his money on lunch. If Ramos had $4.50 left after lunch,
how much money did he have originally?
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What is the value of x in the equation 2(x-4) = 4(2x + 1)?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.