The red light flashes once every three seconds. The green light flashes once every five seconds and the blue light flashes once every seven seconds How many times in 500 seconds do exactly two lights flash at the same time? ​

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

What are the soultion(s) to the quadratic equation 40- x^2=0

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv