**Answer:**

B is equal to 2.5 and C is equal to -2.5

**Step-by-step explanation:**

You would first subtract b-3c from 3b-45c

Your equation would be:

3b-45c-(b-3c)=120-10

Then simplify the equation but distributing the negative sign:

3b-45c-b+3c=110

Then reorder the equation:

3b-b-45c+3c=110

Which equals 2b-42c=110

Then divide both sides by 2:

b-21c=55

b=55+21c

Subsitute 55+21c for b:

3(55+21c)-45c=120

Distribute the 3:

165+63c-45c=120

165+18c=120

Subtract 165 from both sides:

18c=120-165

18c=-45

Divide by 18 for both sides

c= -2.5

To find b, substitute -2.5 for c in the b=55+21c

b=55-52.5

b=2.5

Please correct me if I am wrong.

So your sale would be:

35/100 times 100. So it is 35 dollars off, which means the price is now 65 dollars. Then the coupon is 12 dollars off, so 65- 12 equals 53 dollars for the fountain.

$53.

**Answer:**

<h3>The answer is 10132.5 g</h3>

**Step-by-step explanation:**

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of silver = 965 cm³

density = 10.5 g/cm³

The mass of silver is

mass = 965 × 10.5

We have the final answer as

<h3>10132.5 g</h3>

Hope this helps you

**Answer:**

25

**Step-by-step explanation:**

41 - 9.28 = 31.72

31.72 - 6.71 = 25

I believe the answer is 54%.

Hope this helps!