How do you turn a percent into a decimal?

Which expression converts 45 degree to radians

Find the slope of the line that passes through the points (-2, 4) and (-5, -6). -2/7 10/3 -2/3

Walter is to make cookies for a basketball tournament. he's made 15 cookies so far. his coach asked him to make at least 20 cookies but no more than 55. solve the inequality and interpret the solution. 20 ? x + 15 ? 55