This document contains 6 math problems from a 2015 exam: 1) Find the area function A(t) of a triangle on a line and where it intersects for t values from 0 to 4. Also find the value of k such that a function g(x) intersects the line at only one point. 2) Show an expression is an integer and find values of x such that another expression equals 52. 3) Find integer solutions to an inequality of two affine functions and find when two other functions are equal. 4) Find ratios of areas for a circle and sector with an angle of 60 degrees and when their radii are in a certain ratio. 5) Show a cubic polynomial has a