Answer:
Dave needs to mow 14 lawns to have enough money to buy a bike.
Step-by-step explanation:
180-40=140, 140/10=14. Dave needs to mow 14 lawns to have enough to buy a bike.
162
18 times 9 = 162
ANSWER
x^2 + 2x + y^2 - 6y
<u>= x^2 + 2x + y^2 + -6y</u>