State the amplitude and period of the sine function below​

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.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?