Which of the following is the circumference of a circle whose equation is x + y? - 100? (1) 5
(3) 20%
(2) 10%
(4) 50x

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

The sum of two numbers is 86, and their difference is 20. find the two numbers

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. how many hours after the truck's departure will the two meet?