Answer:
16
Step-by-step explanation:
Answer:
![\large\boxed{x>-3\to x\in(-3,\ \infty)}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7Bx%3E-3%5Cto%20x%5Cin%28-3%2C%5C%20%5Cinfty%29%7D)
Step-by-step explanation:
![-9](https://tex.z-dn.net/?f=-9%3C2x-3%5Cqquad%5Ctext%7Badd%203%20to%20both%20sides%7D%5C%5C%5C%5C-6%3C2x%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%202%7D%5C%5C%5C%5C-3%3Cx%5Cto%20x%3E-3)
If it is < or ≤, draw a line to the left.
If it is > or ≥, draw the line to the right.
Answer:
To file out an income tax form an individual is eligible to use a 1040EZ form when filling an income tax return which have following features:
- Id the person earn less then $ 100,000 per year
- He does not itemize any deductions
- He does not receive a self employment income which means that he does not owns a business
One way to write a linear equation is the formula y = mx + b where m is the slope of the function and b is the y-intercept. For this reason, it is known as slope-intercept form.
The slope os calculated via the formula
. Lets calculate the slope of the equation first.
![\frac{23.16 - 25.32}{57 -39}](https://tex.z-dn.net/?f=%20%5Cfrac%7B23.16%20-%2025.32%7D%7B57%20-39%7D%20)
![\frac{-2.16}{18}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-2.16%7D%7B18%7D%20)
![-0.12](https://tex.z-dn.net/?f=-0.12)
So the slope is -0.12. This means for every minute of time used, $0.12 of credit is used. Next, lets plug in the value for m, and the values of an x and y point to find b.
y = 0.12x + b
23.16 = -0.12(57) + b
23.16 = -6.84 + b
30 = b
So, our final equation is y = -0.12x + 30.
Finally, we can use this equation to find the answer to the last part by plugging the value into x.
y = -0.12(60) + 30
y = -7.2 + 30
y = 22.8
So when 60 minutes have been used, there will be $22.80 worth of credit left.