[tex]\text{We're trying to find the total costs of the amount of jelly beans Howard}\\\text{bought}\\\\\text{We know that the jellybeans cost 0.80 cents per pound}\\\\\text{We also know that he buys 4.5 pounds for himself, and 1 pound for his}\\\text{friend, totaling 5.5 pounds of jellybeans bought}\\\\\text{To find the total cost, multiply 5.5 by 0.80}\\\\5.5\cdot0.80=4.4\\\\\boxed{\$4.40}[/tex]
