Louis was saving money to purchase a remote-controlled model airplane. The plane cost $48. His grandfather gave him $6 and his mother gave him an allowance of $5 per week. If he saved all of his money, he would have $\displaystyle{6}+{5}{x}\usepackage{cmbright}\Huge\$ dollars after x weeks. How much money would Louis have after 8 weeks, and would it be enough?