If doughnuts are usually 75 cents each, but there is a sale on friday advertising them as 1 ½ dozen for $10.80, what is the new cost for just one?

Which equation represents the partial sum of the geometric series?

For how answer my question this will be the last question can you answer in math subject

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?