Before you use the quadratic formula, you have to make sure the equation itself is a quadratic and that a and b are not 0.
So in 5 weeks, Marcie will have collected 25 stickers, and given away 15. She will have 10 stickers left. I hope that this helps! :)
Interest = Pin = principal * interest rate * number of years
Let interest rate be i, then
600*i*2+150*i*4=90
1200i+600i = 90
i=90/(1200+600)=90/1800=1/20=0.05 or 5%
Answer:
3
Step-by-step explanation:
I think its 3 because if its 6 then you divide. it by 2
