Answer:
18 units
Step-by-step explanation:
Start by dividing 13% by 100 because we need to make it into a decimal
13/100=0.13
of=multiply
So from here we simply multiply:
0.13*80=10.4
So our final answer would be: 10.4
Answer:
9/7, 1/6, -3, 4/5
Step-by-step explanation:
Use the 
formula to solve this.
4: 
5: 
6: 
7: 
A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation.
x + y = 24
3x + 5y = 100
What does the solution of this system indicate about the questions on the test?
The test contains 4 three-point questions and 20 five-point questions.
The test contains 10 three-point questions and 14 five-point questions.
The test contains 14 three-point questions and 10 five-point questions.
The test contains 20 three-point questions and 8 five-point questions.
