Please help me on this I need help and nobody is really helping

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Find the value of x to the nearest tenth. a. 4.5 b. 5.4 c. 6.3 d. 7.2