PLEASE ANSWER

Determine if the following systems of equations have one, none or infinitely many solutions.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?