(7i)^2=
Find the square of the imaginary number

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Which two undefined geometric terms always describe figures with no beginning or end?

Percent increase and decrease. original number: 45 new number: 18