Answer:

Step-by-step explanation:
Please see the attached picture for the full solution.
Answer:
4w + 3c = $27
5w + c = $25.50
Step-by-step explanation:
Let us assume the w represent the cost of the sandwich
And, the c represent the cost of the bowl in a soup
Now the equations are
4w + 3c = $27
5w + c = $25.50
These two should be the equations that represent the situation
First, we need to figure out the volume of the cylinder that holds the ink. The formula for the volume of a cylinder is

We have the diameter, but we can easily find the radius by dividing it by 2. 0.400/2=0.200. Now, we plug our numbers into the formula.

Now, we need to figure out how much ink he uses each week. We do this by dividing the volume by the amount of weeks, or 1.445/7 = 0.206.
So, the student uses

ink each week.
Answer:
5/8
Step-by-step explanation:
Step-by-step explanation:
Solve the first eqn for b, b=13–2*a, and the 2nd for c, c=(6*a+5)/3. Then
b+c=13–2*a+(6*a+5)/3=13–2*a+2*a+5/3=44/3. We see that b+c has a definite value because the terms in a cancel.