Mr. Wilson's class took an exam consisting of multiple choice and fill-in-the-blank questions. It takes Katie 3 minutes to answer a multiple choice question and 4 minutes to answer a fill-in-the-blank question. Katie finished the exam in 160 minutes. It takes Robert 5 minutes to answer a multiple choice question and 6 minutes to answer a fill-in-the-blank question. Robert finished the exam in 250 minutes. Which system of equations below can be used to determine the number of multiple choice and fill-in-the-blank questions that were on the exam? (Let x represent the number of multiple choice questions and y represent the number of fill-in-the-blank questions.)

A.
3x + 5x = 160
4y + 6y = 250

B.
3x + 4y = 250
5x + 6y = 160

C.
3x + 4y = 160
5x + 6y = 250

D.
6x + 4y = 250
5x + 3y = 160

google dat sis

step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram