255 hours / 85 hours = 3.
This means that the bacteria will double in size 3 times.
900,000 × 2 = 1,800,000
1,800,000 × 2 = 3,600,000
3,600,000 × 2 = 7,200,000
After 255 hours, the colony of bacteria will be 7,200,000
Answer:
3/5 + 1/4 = 17/20
Step-by-step explanation:
Number one is 54
if she got 4 questions wrong it would be 12
her score if she got x questions wrong it would be 20-2x
