1st part is c
2nd part is d
I BELIEVE
Answer:
There is a total 50 questions.
Step-by-step explanation:
Let x = total questions in the exam
Since 82% of the test was scored correctly, that means 18% of the student's exam was scored incorrectly.
With this information we can write:
(Given that the student made 9 mistakes)
(divide 18% on both sides)

∴ There was a total of 50 questions in the examination.
Answer:
4500x20
Step-by-step explanation:
It will give you your answer
Answer:
Samir wins by 20 seconds
Step-by-step explanation:
X - 21.5 = <span>x less 21.5
answer
</span><span>d. x less 21.5
</span>hope it helps