The senior class at high school A rented and filled 3 vans and 6 buses with 306 students. High school B rented and filled 1 van and 3 buses wit 144 students. Every van had the same number of students in it as did the buses. Find the number of students in each van and in each bus.

8 students in each van ~ 22 in each bus

Step-by-step explanation:

- Equations:

8v + 8b = 240

4v + b = 54

- Modify:

8v + 8b = 240

8v + 2b = 108

- Subtract and solve for "b":

6b = 132

b = 22 (# of students in each bus)

- Solve for "v":

4v + b = 54

4v + 22 = 54

4v = 32

v = 8 (# of students in each van)

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: