Which renewable source of energy should the united states focus its research and development efforts to make this source of energy our country’s main energy source by the year 2050? why? (e2020 financial math)

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

You went to a restaurant and spent $53.25 on the meal. there was a 6% sales tax. what was the amount of money, not including a tip, you spent at the restaurant?