Suppose you deposit $2000 in a savings account that pays interest at an annual rate of 6%. If no money is added or withdrawn from the account, answer the following questions. A. How much will be in the account after 4 years?
B. How much will be in the account after 18 years?
C. How many years will it take for the account to contain $2500
D. How many years will it take for the account to contain $3000

Can someone answer these problems for me

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36