Please help please

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'