I AM MARKING BRAINLEST, IF YOU HELP ME!

Step-by-step explanation:

Let n = 1. Then:

2 + 22 + 23 + 24 + ... + 2n = 21 = 2

...and:

2n+1 – 2 = 21+1 – 2 = 22 – 2 = 4 – 2 = 2

So (*) works for n = 1.

Assume, for n = k, that (*) holds; that is, that

    2 + 22 + 23 + 24 + ... + 2k = 2k+1 – 2

Let n = k + 1.

welll its a very hard question but ill

step-by-step explanation:

first you take the 6 dollars and add 10 to it then add the 50 to that then multiply by 8 with xy and your answer will be

hope this

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²