The admission for the chess team to go to the waterpark can be represented by the equation y = 12x, where y is the total cost of admission for x students. Determine whether the function is proportional or non-proportional. Explain.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Solve the equation by completing the square. x^2+2x=17