Could you show me how to graph this answer?

The minimum cost is $9,900

Step-by-step explanation:

Let the school hire x buses and y vans.

A bus can hold 40 students and 3 teachers.

A van can hold 8 students and 1 teacher.

The number of students riding in  buses and vans is at least 400, therefore

40x + 8y ≥ 400          (1)

The number of teachers riding in buses and vans is at most 36, therefore

3x + y ≤ 36                (2)

Write (1) and (2) as

y ≥ 50 - 5x                 (3)

y ≤ 36 - 3x                 (4)

The equality portion of the solution of (3) and (4) is

36 - 3x = 50 - 5x

2x = 14

x = 7   =>  y = 36 - 3*7 = 15

A graph of the inequalities indicates the acceptable solution in shaded color, as shown below.

The minimum cost of renting buses and vans is

7*$1200 + 15*$100 =  $9900

for this case we have the following expression:

to solve, we rewrite the expression as:

we apply double c and we have:

thus, the quotient is 48.

so, patel found a wrong ratio and the multiplication was incorrect.

option d