Miguel owns 4 types of sport socks and 2 pairs of running shoes , how many combinations of socks and shoes does he have ?

Find the given elements if matrix d:

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Solving algebraic equations 2m+3=11