If Sam invested $3,000 and he earned $300 over six months, the principal is _____.

1 answer:

4 0

A principal is the amount of money you invested or deposited, so in this case, the principal is $3,000,
(and the net amount of money you earn is the interest, that is $300 in this one.)

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Suppose a manufacturer sells a product as $2 per unit. If q units are sold, (a) write the total revenue function, (b) and find t

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Answer:

We are given that a manufacturer sells a product as $2 per unit.

Quantity = q units

So, Total revenue = $\text{Cost per unit} \times quantity$

Total revenue = $2q$

So, the total revenue function is $2q$

Marginal revenue is the derivative of the revenue functions

So, Marginal revenue = $\frac{dR}{dq} =2$

The marginal revenue function is 2

The constant marginal revenue function mean that the revenue earned by the addition of the output is constant.

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<h2>Solving Equations</h2>

To solve linear equations, we must perform inverse operations on both sides of the equal sign to <em>cancel values out</em>.

If something is being added to x, subtract it from both sides.
If something is being subtracted from x, add it on both sides.
Same with multiplication and division. If x is being divided, multiply. If x is being multiplied, divide.

We perform inverse operations to<em> combine like terms</em>. This means to get x to one side and everything else on the other.

<h2>Solving the Questions</h2><h3>Question 1</h3>

$5x+7=15$