3.4.33 A class has 29 students. In how many different ways can four students form a group for an activity? (Assume the order of the students is not important.)
There are how many
different ways that the four students can form a group for an activity.

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%.

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=