A. x = -1; x = 3
B. x = 5; x = -4
C. x = -1; x = 4
D. x = -6; x = 4
: Hope this helps :)
Let's start by seeing what percentage is incorrect.
100-85=15
So, 15% is incorrect when answering 3 problems wrong. So let's divide 15 by 3.
15÷3=5
So, each problem is worth 5%, let's divide 100 by 5. The reason I'm doing thiis is to find how many questions are on the quiz, since if you got them all right, it's 100.
100÷5
20
There are 20 questions, let's make sure this is correct.
If she got 3 wrong, she got 17 right. Let's calculate her percentage and make sure it is the right one.
17÷20
.85×100
85%
So, there are 20 questions on the math quiz.
Answer:
There is not enough information to answer this problem.
Step-by-step explanation:
A proportional function means that if you change X, Y will change in the same proportion. And that proportion of change will remain the same no matter which two values of X you take to compare them.
But that proportion will vary from function to function.
Without knowing what the function is, it's impossible to know the value of Y for a given X... it could be anything.
Answer:
y = -5x + 3
Step-by-step explanation:
y = Ax + B
A = slope
B = y intercept
y = -5x + 3
