To simplify the radical below, which of the following expressions would be multiplied by the radical? What will the answer be please help?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4