Please help me on Part B

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)