Mr smith had 4 daughters each daughter had a brother.. how many kids mr. Smith has

What is the slope of a line that is perpendicular to y = 3x + 1

In what form is the following linear equation written y=9x+2

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.