there are 221 students on a field trip, 5 students ride in a van, the rest of the students fill the buses. enter the equation that can be solved to find the number of students that are on each bus.

00

step-by-step explanation:

a) 7x=7

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15