-2 × - 42 What's the answer??

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

What is the range for 31,39,29,34,37,24,36,33,34,28

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.