I dont think the answer is 129 unless you typed the problem in wrong. Order of operations say to do everything inside the perenthesis first so you would do the 3*2 which is 6 then divide the 12 by 6 and you get 2. so your new equation is 8^2+9(2)-7. Next distribute the 9 to the 2 that is inside the perenthesis. Square root the 8 also. Now it is 49+18-7. The answer would be 60 ...?
Here we find how many pounds he lost (which is 33) then divide that by 6 (because he weighed himself 6 months later) which then we get the fact that jack lost 5.5 pounds a month.
Hope i could help you out here! :)
B
divide because your divideing for x and you wouldnt multiply it unless its a decimal
Answer: see below...
Step-by-step explanation:
a)
48 = 30%
100/30 = 10/3
48 x (10/3) = 160
$160 = 100%
b)
160 - 48 = $112