Find sin(2x), cos(2x), and tan(2x) from the given information. tan(x) = − 1 4 , cos(x) > 0

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?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)