Maya is solving the quadratic equation by completing the square. 4x2 + 16x + 3 = 0 what should maya do first?

a. isolate the variable x2.
b. subtract 16x from both sides of the equation.
c. isolate the constant.
d. factor 4 out of the variable terms.

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?