Acertain bacterial culture is multiplying in a culture dish, doubling in size every 6 minutes. it takes exactly an hour to fill the whole dish. how long does it take to fill half the dish?
a. 54 minutes
b. 48 minutes
c. 30 minutes
d. 36 minutes

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15