HELP IF GOOD AT MATH, IS THIS CORRECT? (IF SO PLEASE EXPLAIN, AND IF NOT WHAT WOULD BE CORRECT) WILL MARK BRAINLIEST!

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Find the measure of angle c in the following triangle.