Answer:
Motorized train for $9.99 = 5.99
Doll house for $12.99 = $7.79
Building blocks for $5.69 = $3.41
Step-by-step explanation:
Standard form is f(x)=ax^2+bx+c
order of power
f(x)=2x^2-11x+2
So the students are on 5:6 ratio from volleyball to football, and we know there are 220 students in total.