Final answer:
To calculate how much Jeff will spend, with the discount, before tax, if he buys M pairs of jeans, we can use the algebraic expression (35M + 50) * 0.85.
Step-by-step explanation:
To calculate how much Jeff will spend, with the discount, before tax, if he buys M pairs of jeans, we need to consider the cost of the jeans and the discount he receives as a VIP shopper. Each pair of jeans costs $35, so M pairs of jeans will cost 35M dollars.
He also buys a pair of shoes for $50.
As a VIP shopper, he receives a 15% discount on his purchase, so the discounted price of the jeans and shoes is 85% of the total cost. We can represent this algebraically as:
Cost before tax = (35M + 50) * 0.85
This expression calculates the total cost of M pairs of jeans and one pair of shoes, after applying the 15% discount. This will give us the amount Jeff will spend before tax.