<u>Answer:</u>
The grade you make on your exam varies directly with the number of correct answers. The constant of variation is 5
<u>Solution:</u>
Given, The grade you make on your exam varies directly with the number of correct answers you get on the exam.
Answering 15 questions correctly will give you a grade of 75 what is the.
We have to find what is the Constant of variation.
Now, according to the given information, grade number of correct answer
Then, grade = c x number of correct answers, where c is constant of variation.
Now, substitute grade = 75 and number of correct answers = 15

Hence, the constant of variation is 5
Answer:
z=12
Step-by-step explanation:
6*2=12
z=12
Answer:
B
Step-by-step explanation:
we have to find for what value of x the graph exists.
1) start to see on the left
- the graph ”hasn’t a start“ so it continues to go until -oo
2) notice that the graph stops when x = 0
3) match the two informations
x≤0
Answer:
Step-by-step explanation:
Let the length of the shorter piece be x
Then the longer piece is x + 7
- x + x + 7 = 45
- 2x = 45 - 7
- 2x = 38
- x = 19
Short piece = 19 in
Long piece = 26 in