A quiz has 20 questions with 7 points awarded for each correct answer , 2 points deducted for each wrong answer , and 0 for each question omitted (omitted means not answered the question ) Jack scored 87 points. how many questions did he omit ?

Jack omitted 5 questions

Step-by-step explanation:

There are 20 questions

7 points given for each correct answer

2 points deducted for each wrong answer

0 for each question omitted.

Jack scored 87 points.

Maximum points Jack could get is 20*7=140 points

Let's use trial and error.

Let Jack answered 13 correct, 2 wrong and 5 omitted

So, 13*7=91

2*-2=-4

So, 91-4=87

Jack omitted 5 questions.

right

step-by-step explanation:

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.