I'm in 3rd grade so please help Kelly opened a bank account that earns 1.6% simple interest each year. After 7 years, Kelly will earn $164.64 in interest. How much did Kelly deposit when she opened the account? Round to the nearest whole dollar.

Which formula gives the area of a triangle? a=1/2(b+h)

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?