Answer:
1. 
- Degree: 2
- Number of terms: 3
2. 
- Degree: 3
- Number of terms: 2
3. 
- Degree: 4
- Number of terms: 2
Step-by-step explanation:
For this exercise you need to remember the multiplication of signs:

1. Given:

Apply the Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 2
- Number of terms: 3
2. Given:

Add the like terms:

You can idenfity that:
- Degree: 3
- Number of terms: 2
3. Given:

Apply Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 4
- Number of terms: 2
Proportional as the slope is constant
If you worked for 6 days and had a 50 dollar in your bank account, the M will represent how much money you have.
First difference,

Second difference,

Third difference,

And so on.
Assuming the pattern holds on, we see that
i-th difference,


Then, nth term is,











Now, the 21st term in the sequence is,



Answer:
35 x 10.6, 140 x 2.65 and 371 x 1
Step-by-step explanation: