10% of 44 is 4.4 and 5% is 2.2 so 6.6 is 15% so an estimate of 8 is the most accurate
X is always dependant to Y. so that should answer the 1st one. the 2nd looks to be around 17-18. 17.5 maybe. and the 3rd is yes cause he does not go to the pool so it isnt any cost.
1 because you replace x with 2 so, (2)squared -5x2 + 7 = 4 - 10 + 7 = 1
You would have to mow 9 lawns
