What should be done first to simplify 11 – 2 + 7 + 5 – 8 + 13

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

Write 17/20 as a decimal and as a percent.

According to the data set, where should the upper quartile line of the box plot be placed?