You invest $55 at 10% compounded annualy for 3 years. How much will your investment be worth in 3 years

I'll give brainliest if you answer right : )

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details