An $80 item is reduced to $60, then marked back up to $80. Which statement describes the percent increase and percent decrease? A. The percent increase is 20%

B. The percent increase is less than the percent decrease.

C. The percent increase is equal to the percent decrease.

D. The percent increase is greater than the percent decrease.

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.