Simplify this expression. 5x(3x2 + 6)

A.

15x2 + 6

B.

15x2 + 30x

C.

15x3 + 6

D.

15x3 + 30x

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is the distance between point a and b