Which vectors represent the reflection of the vector <3, -7> across the x-axis?

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

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)