Answer: 0.796875n + 0.584375p
Explanation:
Lance bought n notebooks that cost $0.75 each. This means that the total cost of n notebooks would be $0.75n
Lance also bought p pens that cost $0.55 each. This means that the total cost of p pens would be $0.55p
The total cos of n notebooks and p pens is
0.75n + 0.55p
A 6.25% sales tax will be applied to the total cost. This means the amount of tax paid would be
0.0625(0.75n + 0.55p)
= 0.046875n + 0.034375p
Therefore, the expression that represents the total amount Lance paid, including tax is
0.75n + 0.55p + 0.046875n + 0.034375p
= 0.796875n + 0.584375p