Select the correct answer.
Convert (6,150°) to rectangular form.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?