Two angles are supplementary. The first angle is 4x degrees. The second angle is (2x + 6) degrees. Determine the value of x.

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

How many $20 bills do you need to have to make $280

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?