Six times a number squared divided by twenty written in number form?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

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?

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?