World Problem: Ali is two years younger than Ray. Ray is 3 years younger than Nora. The sum of their ages is 64. How old is Ray?   Equation: r = n-3, a = r - 2, n + a + r = 64 what is the value or r?   There is also a bubble grid included

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.