Answer:

Step-by-step explanation:
This question implies the constant rate or proportion of water to mass. Therefore, we can set up the following equation:

Answer:
Step-by-step explanation
- Amount of discount: 20%= 0.20; 0.20×42= $8.4
- Sale price: $42-$8.4= $33.6
For interest question, plug in the values:
P= $3200
r= 3%÷100 = 0.03
t= 4 years
Calculate:
I=Prt
= 3200×0.03×4
=$384
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
----> equation A
----> equation B
Solve the system by graphing
Remember that the solution of the system is the intersection point both graphs
Using a graphing tool
The intersection point is (1,5)
see the attached figure
therefore
The solution of the system is the point (1,5)
Given:
She is required to read a total =
hours a week.
Monday she read
hours.
Tuesday she read
of an hour.
Thursday she read 3 hours.
To find:
The total hours does she still need to read in order to get full credit.
Solution:
Total time =
hours a week.
Total time she already read
hours
hours
hours
hours
hours
Now,
Remaining time = Total time - Total time she already read






Therefore, the required time is
hours.