Answer:
I think before she pur 75% to her push ups she did.....probably only 18 pushups
Using long division, we get
2x-5
x+3 | 2x^2+x-15
- (2x^2+6x)
_________
-5x-15
-(-5x-15)
________
0
2x-5 is your answer
<u>First problem :</u>
probability to draw a red paper : 42/(42+18)=7/10
In 110 tries one can thus expect to draw 7/10*110=77 red papers
<u>Second problem :</u>
Since for 150 trials (which will give the least error) we have got 135 yellow balls, we can expect twice as much in 300=150*2 trials, which makes 270 yellow balls.
Cost of 3 gallons of milk =3.79
Amount Kari paid =20
difference =20-3.79 = 16.21
so she will receive 16.21 back
