the answer is b. 5 x 107 m. i did the test.
i'm pretty sure its 70%
because if she got 12 out of 15 then she got three wrong so that would mean she has 70% not 80% sorry to confuse you
with the given information in the problem, setting up a proportion with equivalent ratios (fractions) would be a good way to solve for the missing variable, or the amount that was in mrs. manning's savings account last month . since we know that her current balance of $1170 is 156% of what she had last month we can set up the following proportion:
where 'x' is the amount from her savings last month, which would represent 100%.
using cross-multiplication and division, we can solve for 'x':
(1170)(100) = 156x or 117000 = 156x
divide both sides by 156:
solve for 'x': x = $750 which is the amount in her last month's savings.
0x² – 2x + 1