Pleas i don’t understand!

A- It is January 1. You have just deposited $1,000 in a savings account that pays 8% per
year, compounded annually.

1- How much will your account be worth in a year?

2- In three years?

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

Which of the following expressions is equal to 2x^2+8

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !