The square of a number is 12 less than 7 times the number. what is the number?
4or-3
4 or 3
-3 or 4
3 or 4

Can somebody me out with this question

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?