Please answer all the question

Write careful, complete solutions for the following problems and submit them according to Directions for Submitting Written Assignments, under Orientation to Online MATH 148 in the Canvas classroom. 1. Consider a function that goes through the two points (0, 5) and (1, 20). Find the formula for the function if (a) The function is linear (of the form f (x) = ma + b) (b) The function is quadratic (of the form f(x) = ax? + br + c), and (1,20) is the vertex of the parabola. (c) The function is an exponential (you can either look for function of the form f(x) = ab", or of the form f(x) = acki) 2. A company's revenue from the sale of a particular item is a function R(q). R is the revenue, in thousands of dollars, and q is quantity of items sold, in thousands. (a) Interpret the statement R(18) = 210. (That is, write in English what this expression means in terms of items and dollars.) (b) Interpret the statement R'(12) = 6