A pair of sneakers cost s dollars. A pair of socks costs k dollars. If the store charges 5% sales tax, write an expression for the cost of one pair of socks and one pair of sneakers.

1.05(s + k)

To find the cost of one pair of socks and one pair of sneakers, you need to add the cost of each item together and include the sales tax. Let's break it down step by step:

1. The cost of one pair of sneakers is s dollars.
2. The cost of one pair of socks is k dollars.
3. The sales tax is 5% of the total cost.

To include the sales tax, you need to calculate 5% of the total cost of the sneakers and socks. To do that, you multiply the total cost by 0.05 (which is the decimal equivalent of 5%).

So the expression for the cost of one pair of socks and one pair of sneakers, including sales tax, is:

s + k + (s + k) * 0.05

This expression represents the sum of the individual costs of the sneakers and socks, plus 5% of that total cost.