Which of these is an even function? a. f(x)=5x^2-x b. f(x)=3x^3+ x c. f(x)=6x^2-8 d. f(x)= 4x^3 +2x^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.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip