If a=5+2i, b=-3+i and c=4i(2+3I), determine ab+c in simplest a+bi form

What is the 12th term of b(n)=-4-2(n-1)

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

To decrease an amount by 16% what single multiplier would you use