Can sum1 help me i don’t understand the problem

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?