Convert 7 to a fraction with 5 on the bottom
35/5+2/5= 37/5 or 7.4
0.5 inches ph * 3 hours = 1.5 inches
+ 10 inches he started with.
= 11.5 inches.
I don’t know about the second question
The probability that a plastic blue marble is chosen is 1/5
Answer: The exponential model for the area would be 
.
Step-by-step explanation:
Since we have given that
Initial square miles = 8
It gets tripled in every 4 hours.
So, in every 4 hours, it become 3.
In every 1 hour, it becomes 
So, According to question, an exponential model for the area would be
Hence, the exponential model for the area would be
Answer: -x + 2
Step-by-step explanation:
So I assume that the question would be set up like this if you are finding the sum of all 3 terms:
(x + 5) + (-4x - 2) + (2x - 1)
1) Take out parentheses
x + 5 - 4x - 2 + 2x - 1
2) Add like terms
For the x terms:
x - 4x = -3x
-3x + 2x = -x
For the other terms:
5 - 2 = 3
3 - 1 = 2
The sum of the terms is <u>-x + 2</u>
