In which of the following expressions is 5 a coefficient? 19x + 4y + 5
7x2 + 4x5 + 2
x + 3 + 2 – x
5y + 4z

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

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

3x = 729 solve for x plz . it's urgent. will mark