Can someone me out on these few questions?

See Below

Step-by-step explanation:

1.

2.

3. The missing term is 7x^2 * 3

4. The terms in the final polynomial are 42x^2, 9 and 42x^4. Because the missing term is 21x^2 and the terms in the final polynomial includes all the blocks

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~