Dominic has $35.42 in his bank account. He earns $18 for mowing lawns. He spends $1.89 on Gatorade and then deposits the rest into his bank account. For his birthday, he is given $35. Dominic wants to buy a skateboard that is $78.34 (including tax). Does he have enough money to buy the skateboard? Explain how you used math to come to your decision