Answer:
670
Step-by-step explanation:
(3*1+2)+(3*2+2)+........(3*20+2)=670
Reduce each ratio to its minimum expression to find if they are equal.
35:28
![\begin{gathered} \frac{35}{28}=\frac{7\cdot5}{7\cdot4} \\ =\frac{5}{4} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B35%7D%7B28%7D%3D%5Cfrac%7B7%5Ccdot5%7D%7B7%5Ccdot4%7D%20%5C%5C%20%3D%5Cfrac%7B5%7D%7B4%7D%20%5Cend%7Bgathered%7D)
10:8
![\begin{gathered} \frac{10}{8}=\frac{2\cdot5}{2\cdot4} \\ =\frac{5}{4} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B10%7D%7B8%7D%3D%5Cfrac%7B2%5Ccdot5%7D%7B2%5Ccdot4%7D%20%5C%5C%20%3D%5Cfrac%7B5%7D%7B4%7D%20%5Cend%7Bgathered%7D)
Since both ratios reduce to 5:4, they are equivalent.
Another way to check a:b is equivalent to c:d, is that a*d = b*c
In this case, this will be true if 35 times 8 is equal to 10 times 28:
![\begin{gathered} 35\cdot8=280 \\ 10\cdot28=280 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%2035%5Ccdot8%3D280%20%5C%5C%2010%5Ccdot28%3D280%20%5Cend%7Bgathered%7D)
Since both products are equal, then the ratios are equivalent.
Graph A because a graph of non proportional relationship will not pass through the origin (0,0) hope this helps! Remember to give me a like if it did please and thank you!
Answer:
company b 10,080 dollars
Step-by-step explanation:
Answer:
b is right
Step-by-step explanation: