The ages of the student in a dance class are 10 9 11 12 9 10 9 10 11 12 8 12 12. what is the mode for this set of data?

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! )

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.

The graph is supposed to show f(x) = 3 sin (x/4+1) - 1/2. which of the following are correctly represented in the graph? select all that apply.