Help me
and please don't make the answer confusing if its good ill give

Me. i can't figure out this question. give an explanation too. .

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.