The selling price, s, of an item is s = c + mc, where c is the cost of the item and m is the percent markup based on cost. what is the formula solved for m?

Can anyone me with 32,33,36,37,and 40.

What term makes it inconsistent y=2x - 4 ?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?