Express the series using sigma notation.

4 + 16 + 64 + 256 + 1,024

Can someone me with these two circle theorem questions asap?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

The price of a visit to the dentist is \$50$50. if the dentist fills any cavities, an additional charge of \$100$100 per cavity gets added to the bill. if the dentist finds nn cavities, what will the cost of the visit be?