Let a and b be any real numbers. A. Simplify the product of (a + bi)(a – bi). B. Using your answer from part A, justify what kind of answer always results from multiplying a complex number and its complex conjugate.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?