I'm confused on #21. it's very hard. i tried starting it but i gave up.

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3

Given: pb tangent pv,pu secants if m = 80° and m = 30°, then m 3 = 55 40 25