You are going shopping and you plan to buy 3 new pairs of pants, 2 new shirts, and a pair of boots.

the total cost of this shopping trip can be represented by the expression
3p + 2s + b
where p stands for the cost of each pair of pants, s stands for the cost of each shirt, and b stands for the cost of the boots.

if each pair of pants cost $39.99, each shirt costs $17.89, and the boots cost $49, what is the total cost of the shopping trip?

show work here:

final answer here: