Your equations are right. just use the substitution method to solve. substitute y because both have that on one side
it'll look like 40x+30=30x+60.
then just get x in one side. I showed my owrk in the photo
Im pretty sure the answer is 7.84. i got this because 7 is a whole number so it is in the whole number spot. Then, you have to get your denominator to 100. So, what times 25 equals 100? its 4. so you get 100 so whatever you do to your denominator you do to your numerator. so 21 times 4 is 84. so 84/100 is actually 7.84. Hope this helped
Answer:
See below
Step-by-step explanation:
Which is the closest to 6
or 
So, find the square root of each ( I suggest using a calculator)
Which is closest? Let's see.
6 - 5.83 = 0.17
6.24 - 6 = 0.24
6 - 5.91 = 0.09
6.16 - 6 = 0.16
Find the smallest #
0.09 is the smallest, so 5.91 is the closest. Square the #, we get 
Hope this helps! =D
