Answer:
19
Step-by-step explanation:
f(x) = 2x^2 +1
Let x =3
f(3) = 2 (3)^2 +1
= 2 *9 +1
= 18 +1
= 19
By looking at the table, we can see that the y values are equal to the x values multiplied by 3.
3x = 3*3 = 9
3x =3*9 = 27
3x=3*13=39
3x= 3*20= 60
So, it is a direct variation and the function is y=3x
The larger van has maximum 31 seats, the small van have 17 seats
