Answer:
On the 7th day.
Step-by-step explanation:
The mold doubles, so on the 7th day, the mold would be half-there.
I used the 8th day's description to figure this out.
Answer:
x = 8
Step-by-step explanation:
3x - 20 = 4
add 20 to both sides
3x - 20 + 20 = 4 + 20
3x = 24
divide both sides by 3
= 
x = 8
Answer:
40 percent
Step-by-step explanation:
10 / 25 =.4=40%
Answer:
As a decimal its 6.34, If you round up then its 6.35
As a fraction its 400/63
As a mixed number its 6 22/63