Mason says that (12x+4)-(-3x+5) and 15x -1 are equivalent. Is he correct

Order the numbers in each list from least to greatest. 0, |−14|, 13, −12, |−16|, 17

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3