X0.10. xtimesy (y being every minute) = 8.40 (Money that she spent extra) Well 8.40 divided by 0.10 is 84. so she went 84 mins over
Angles 1 and 2 are a.) supplementary. This means that b.) the measure of each when added will be equal to 180 degrees. We can see this because they are both "flat" on a line next to each other.
We are asked to find the area of patio. It is circular so formula used for area is given by:

Where
r = radius = diameter / 2 = 20 / 2 = 10 feet

When we round this to the nearest whole number: