The answer is the first one , A
B $2.85
You multiply the $1.60 by 3 and then subtract 1.95 from that answer.
Answer:
hope this helps buddy, please mark the brainliest.
Step-by-step explanation:
Answer:
s = 5.1
Step-by-step explanation:
![0.7 (3s + 4)-1.1s = 7.9\\](https://tex.z-dn.net/?f=0.7%20%283s%20%2B%204%29-1.1s%20%3D%207.9%5C%5C)
Multiply both sides of the equation by 10
![0.7\left(3s+4\right)\cdot \:10-1.1s\cdot \:10=7.9\cdot \:10\\\\= 7\left(3s+4\right)-11s=79\\](https://tex.z-dn.net/?f=0.7%5Cleft%283s%2B4%5Cright%29%5Ccdot%20%5C%3A10-1.1s%5Ccdot%20%5C%3A10%3D7.9%5Ccdot%20%5C%3A10%5C%5C%5C%5C%3D%207%5Cleft%283s%2B4%5Cright%29-11s%3D79%5C%5C)
Expand
![\mathrm{Expand\:}7\left(3s+4\right)-11s:\\\quad 10s+28](https://tex.z-dn.net/?f=%5Cmathrm%7BExpand%5C%3A%7D7%5Cleft%283s%2B4%5Cright%29-11s%3A%5C%5C%5Cquad%2010s%2B28)
Subtract 28 from both sides
![10s+28-28=79-28](https://tex.z-dn.net/?f=10s%2B28-28%3D79-28)
Simplify
![10s=51](https://tex.z-dn.net/?f=10s%3D51)
Divide both sides of the equation by 10
![\frac{10s}{10}=\frac{51}{10}](https://tex.z-dn.net/?f=%5Cfrac%7B10s%7D%7B10%7D%3D%5Cfrac%7B51%7D%7B10%7D)
Simplify
![s=\frac{51}{10}\\\\Decimal = 5.1](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B51%7D%7B10%7D%5C%5C%5C%5CDecimal%20%3D%205.1)