A proportional relationship between y and x. When x = 3, y=−4 . What is the constant of proportionality, k?

Enter your answer as a simplified or improper fraction in the box.

k =

Evaluate the expression for the given value of the variable 7a - 4a for a =8

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project