What is the constant of variation, k, of the line y=kx through (3,18) and (5,30)?

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

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.

For what value of x does 4x = (1/8) x + 5?