Nina got a 86% on her science quiz. She got 43 questions correct. How
many questions were on the test? (What do you know, the part or the
whole?) *

50 problems total.   We know part of this, because it is possible there is extra credit.

Step-by-step explanation:

Normally if you get 100%, you get all the problems right.

So.

86% of (Total problems) = 43  correct

If you divide 43 by 86%, you can get the total number of problems.

Total problems = 43/0.86 = 50 problems

From your great MysticChaCha.  :-)

is this part of a question or something

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?