Nia answered correct answers = 80% of the 40 questions
When we remove % sign from a number, we divide that number by 100
=
of 40
=
Cancelling the two zeroes from numerator and denominator,
= 
= 32.
Total correct answers answered by Nia = 32
8x - 15 = 3x
+15 +15
8x = 3x + 15
-3x
5x = 15
/5 /5
x = 3
The answer is b (I think not really sure)
Answer:
x=0
Step-by-step explanation: If x=0, then two points on the graph can be (0, 6) and (0,0). using those two points, you can say the slope is 6/0, which is undefined
Answer: 1.25 problems/min
32 minutes --> 40 problems
1 minute --> 40/32
--> 1.25