The answer is C 870 because it’s 1800 minus 430 minus 500
<h3>0.5 inches of hair is grown each month</h3>
<em><u>Solution:</u></em>
Given that,
Bethany cut off 18 inches of her hair
It took her 3 years to grow it back
<em><u>How much did her hair grow each month?</u></em>
From given,
length of hair = 18 inches
Number of years = 3 years
<em><u>Convert to months</u></em>
1 years = 12 months
3 years = 3 x 12 = 36 months
<em><u>Thus, length of hair grown in 1 month is given as:</u></em>
![\text{length of hair grown in 1 month } = \frac{\text{length of hair}}{\text{36 months}}\\\\\text{length of hair grown in 1 month } = \frac{18}{36}\\\\\text{length of hair grown in 1 month } = 0.5](https://tex.z-dn.net/?f=%5Ctext%7Blength%20of%20hair%20grown%20in%201%20month%20%7D%20%3D%20%5Cfrac%7B%5Ctext%7Blength%20of%20hair%7D%7D%7B%5Ctext%7B36%20months%7D%7D%5C%5C%5C%5C%5Ctext%7Blength%20of%20hair%20grown%20in%201%20month%20%7D%20%3D%20%5Cfrac%7B18%7D%7B36%7D%5C%5C%5C%5C%5Ctext%7Blength%20of%20hair%20grown%20in%201%20month%20%7D%20%3D%200.5)
Thus, 0.5 inches of hair is grown each month
x < 22.5; Samuel has less than 22.5 minutes to finish the race in the estimated time.
<h3>What amount of time Samuel left for the race?</h3>
The given inequality is-
![10x < 33](https://tex.z-dn.net/?f=10x%20%3C%2033)
From here, we define the variable x.
x = Number of the minutes left for the race
From here we can find the value of x
We have then:
![x < 33-10.5](https://tex.z-dn.net/?f=x%20%3C%2033-10.5)
![x < 22.5](https://tex.z-dn.net/?f=x%20%3C%2022.5)
Hence, Samuel has less than 22.5 minutes to finish the race in the estimated time.
To know more about inequality follow
brainly.com/question/24372553
Question 1 demonstrates the Commutative Property.