Please help me on this. I really need some insight. Thanks.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

If i have 20$ and i gave 5$ away how much i got

The measure of an angle is 117°. what is the measure of a supplementary angle?