Hello,
the answer is D (said Al Kashi)
You can identify that "5 over 100" can be written as a fraction. 5 will be the numerator and 100 will be the denominator:

To reduce this fraction, you need to divide the numerator and the denominator by the Greatest Common Factor (GCF) between them.
In this case, to find the GCF, you need to:
- Decompose the number into their Prime Factors:

- Notice that 5 is a common factor. Then, you need to choose the one with the lowest exponent:

Therefore, by dividing the numerator and the denominator by 5, you get:

Hence, the answer is:
19.B 20. D 21. A. 22. A
You just put in calculator make sure you click the mode button and highlight degree so it can work
![\bf y=\stackrel{\downarrow }{\cfrac{4}{3}}x+1\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill](https://tex.z-dn.net/?f=%5Cbf%20y%3D%5Cstackrel%7B%5Cdownarrow%20%7D%7B%5Ccfrac%7B4%7D%7B3%7D%7Dx%2B1%5Cqquad%20%5Cimpliedby%20%5Cbegin%7Barray%7D%7B%7Cc%7Cll%7D%20%5Ccline%7B1-1%7D%20slope-intercept~form%5C%5C%20%5Ccline%7B1-1%7D%20%5C%5C%20y%3D%5Cunderset%7By-intercept%7D%7B%5Cstackrel%7Bslope%5Cqquad%20%7D%7B%5Cstackrel%7B%5Cdownarrow%20%7D%7Bm%7Dx%2B%5Cunderset%7B%5Cuparrow%20%7D%7Bb%7D%7D%7D%20%5C%5C%5C%5C%20%5Ccline%7B1-1%7D%20%5Cend%7Barray%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill)

so then, we know this line has a slope of -3/4 and runs through (4 , 1)

