Answer:
0.38 is a rational number because it can be expressed as fraction, and it isn't a repeating decimal.
Step-by-step explanation:
Repeating decimals aren't rational, and all rational numbers can be expressed as a fraction, or they aren't rational.
Using linear function concepts, it is found that the representation of the value of 4,000 is given by:
B the gallons of water initially in the pool.
<h3>What is a linear function?</h3>
A linear function is modeled by:
y = mx + b
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.
In this problem, the amount of water in the pool after x hours is modeled by:
y = -720 x + 4000.
4000 is the y-intercept, which is the initial amount of water in the pool, hence option B is correct.
More can be learned about linear function concepts at brainly.com/question/24808124
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If the probability that she will be picked is 2/38 = 1/19
then the probability that she won't be picked is 36/38 = 18/19
Substitue what y equals for y and solve.
![-4x+7(3x+15)=20 \\-4x+27x+105=20 \\23x=-85 \\x=-\boxed{\frac{85}{23}}](https://tex.z-dn.net/?f=%3C%2Fp%3E%3Cp%3E-4x%2B7%283x%2B15%29%3D20%20%5C%5C%3C%2Fp%3E%3Cp%3E-4x%2B27x%2B105%3D20%20%5C%5C%3C%2Fp%3E%3Cp%3E23x%3D-85%20%5C%5C%3C%2Fp%3E%3Cp%3Ex%3D-%5Cboxed%7B%5Cfrac%7B85%7D%7B23%7D%7D%3C%2Fp%3E%3Cp%3E)
Hope this helps.