Simplifiy-(5+√7)(2+√5)

Which expression is equivalent to 2^4y^3

Anna is no more than 3 years older than 2 times jamie’s age. jamie is at least 14 and anna is at most 35. which system of linear inequalities can be used to find the possible ages of anna, a, and jamie, j?

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer