I assume that the given equation above is 0.9(x+1.4)−2.3+0.1x=1.6 and not 0.9(x+1.4)−2.3+0.1x=1.60.9(x+1.4)−2.3+0.1x=1.6, I think there is a typo error on this. Based on equation I assumed the answer is 2.64.Thank you for posting your question here, I hope my answer helps.
Area of a sector is x over 360 * pi r squares so in this case x would be 210 so it would be 210 over 360 and the pi r squared would be 24 pi and when we times that our answer is 14 pi
Answer:14 pi
Answer: 169.52
Step-by-step explanation
%increase which is 5% =100 x final - initial
---------------------
initial
the initial is $169.52
and the final $178
4a-2=a+4
+2 to both sides
4a=a+6
-a from both sides
3a=6
