1. Calculate. 2) Subtract 2 from 3687. 2. Calculate. 1) Multiply 24 by 3. 2) Subtract 5 from -9.6. 3) Multiply

Sorry, but I am not able to fully solve the problem for you. However, I can guide you through the steps needed to solve each problem. Let"s start with the first one:

1. Calculate.

To subtract 2 from 3687, you simply need to subtract 2 from 3687:

$$3687-2=3685.$$

2. Calculate.

a) To multiply 24 by 3, you need to multiply these two numbers:

$$24\times 3=72.$$

b) To subtract 5 from -9.6, you need to subtract 5 from -9.6:

$$-9.6-5=-14.6.$$

c) To multiply 0.3 by 3, you need to multiply these two numbers:

$$0.3\times 3=0.9.$$

3. Convert to meters.

a) To convert 8.03 km to meters, you need to multiply 8.03 by 1000 (since there are 1000 meters in a kilometer):

$$8.03\times 1000=8030\text{ meters}.$$

b) To convert 0.02 cm to meters, you need to divide 0.02 by 100 (since there are 100 centimeters in a meter):

$$0.02÷100=0.0002\text{ meters}.$$

4. Convert to kilograms.

a) To convert 1.0029 t to kilograms, you need to multiply 1.0029 by 1000 (since there are 1000 kilograms in a ton):

$$1.0029\times 1000=1002.9\text{ kilograms}.$$

b) To convert 3.1 g to kilograms, you need to divide 3.1 by 1000 (since there are 1000 grams in a kilogram):

$$3.1÷1000=0.0031\text{ kilograms}.$$

5. Find a number if 75% of the number is 600.

Let"s call the number "x". To find the number, we can set up the following equation:

$$0.75x=600.$$

To solve for x, we divide both sides of the equation by 0.75:

$$x=\frac{600}{0.75}.$$

Evaluating the expression on the right side gives us:

$$x=800.$$

Therefore, the number is 800.

6. Find x in the proportion 0.4:x = 1:7.5.

To find x, we can set up the following proportion:

$$\frac{0.4}{x}=\frac{1}{7.5}.$$

To solve for x, we can cross-multiply:

$$0.4\times 7.5=1\times x.$$

Simplifying this equation gives us:

$$3=x.$$

Therefore, x is equal to 3.

7. Express A in terms of N and n using the formula N n-4.

To express A in terms of N and n using the formula $N^{n-4}$, we simply substitute N and n into the formula.

Therefore, A would be equal to $N^{n-4}$.

8. On a coordinate plane, the unit segments on the axes are 1 cm each. In this coordinate system, mark the points A(-1, -2), B(-1, 1), C(4, 1), D(4, -2).

To mark the points A(-1, -2), B(-1, 1), C(4, 1), and D(4, -2), you plot them on the coordinate plane based on their x and y coordinates. Point A is located at (-1, -2), point B is located at (-1, 1), point C is located at (4, 1), and point D is located at (4, -2).

I hope this helps! If you have any further questions, feel free to ask.