You can solve this by setting up a proportion. You can put the number of items correct over the total number. and substitute the unknown number with x.

=

Cross-multiply
3400 = 100x Divide both sides by 100
34 = x
40 - 34 = 6
So, Jill got
6 questions wrong.
Answer:
Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6. Thus, the equation of the line is y = ½x + 6.
Step-by-step explanation:
Answer:
1.25
Step-by-step explanation:
-3/4+2=1.25