[B] Consider the equation x1 + x2 + x3 = 25 where a1, x2, a3 E Z. 2/5 (B.1) How many solutions are there to this equation satisfying: x1 2 2, x2 2 0, and a3 > 5? (B.2) How many solutions are there to this equation if r1 and r2 are nonnegative integers, and a3 2 -6? [C] For each expression below, find the COEFFICIENT of the y9 term when the expression is expanded by the binomial theorem. Note, you do not have to multiply them out (please don't!). Your coefficient should be written as a simplified integer. (C.1) (2x – y)17 Answer: (C.2) (3r² + 2y³)"

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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.