Answer:
Circumference of wheel=πd
Circumference of wheel =22*2.1/7
Circumference of wheel =6.6 Mrs
It coveres 6.6mtrs in one round
Then in 100 rounds it will take 6.6*100=660mtrs
I think that it
2 ÷ 9 ≈ 0.222
√78 ≈ 8.832
answer:
y = 165+12x should be the answer