David assembles 12 circuit boards in 255 minutes. amy assembles 9 circuit boards in 170 minutes. who works at a faster rate?

This needs to be done quick you are studying different function tools and begin working with this function y=-160-9(x) use the equation to answer the question y=-160-9(x) what is the y value when x equals -13? y=-160-9(x)

Points d and e are midpoints of the sides of triangle abc. the perimeter of the triangle is 48 units. what is the value of t? ο ο ο ο 7t +

Which expression is equivalent to 5r6141 2r+st6