Why is it that if you multiply a negative imaginary number (-i) by a positive imaginary number (i), it equals to positive 1? shouldn’t it be a negative 1? ) • (-1) = -1 this is the right equation, right?

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?