Answer:
x=3 y=11
Step-by-step explanation:
2x+3=9
2x=6
x=3
y-4=7
y=11
1 liter = 100 centiliter
0.31 * 100 = 31
31 centiliters = 0.31 liters
Answer:
4
Step-by-step explanation:
12n - 2n = 10n
10n = 40
40 divided by 10 = 4
n = 4
Answer:

Step-by-step explanation:
Considering that The Student Council expects to 150 students for a dance, and spends $10 per student.
If the expectancy is that the number of students increases by 8%
Then since the growth is 8%
we can write the the Predicted Number of Students as a Geometric Sequence,
A.

Therefore,

B) If we spend $10 per student on the 1st year, but the Council wants to reduce the expenditure 4% yearly. Since we want to reduce 4% we must multiply by 96%.

Therefore we can write:

C)
The total expenditure for food must be reduced, by 4%. As long as the public goes increasing by 8% yearly this
So,

Answer:
B
Step-by-step explanation:
We know that in 8 minutes she weeded 40% or .4 of her garden.