All 231 students in the math club went on a field trip. some students rode in vans which hold 7 students and some students rode in buses which hold 25 students each. how many of each type of vehicle did they use if there were 15 vehicles in total?

the number of vans is 9

the number of buses is 6

Step-by-step explanation:

Let x represent the number of vans

Let y represent the number of buses.

Some students rode in vans which hold 7 students and some students rode in buses which hold 25 students each. The total number of students in the Math Club that went on the field trip is 213.

This means that

7x + 25y =213 - - - - - - - - - -1

Total number of vehicles used is 15. This means that

x + y = 15

Substituting x = 15 - y into equation 1, it becomes

7(15 - y) + 25y =213

105 - 7y + 25y = 213

- 7y + 25y = 213 - 105

18y = 108

y = 108/18 = 6

x = 15 - y = 15 - 6

x = 9

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

she gotta workk that a 2

step-by-step explanation: