Say, there is 88 students for 4 classes whats the unit rate?
a: 22 students per class
b: 22 classes per student
c: 25 students per class
d: 25 classes per student

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.