Show that ( 1 +i )2 = 2i

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

3/4 = c/36 i need with this fraction proble.