Tessa solves the equation below by first squaring both sides of the equation. \sqrt{x^2-3x-6}=x-1 x 2 −3x−6 ​ =x−1square root of, x, squared, minus, 3, x, minus, 6, end square root, equals, x, minus, 1 What extraneous solution does Tessa obtain?​

Giving 100 points asap bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. calculate the area of the polygon. be sure to show all your work and explain your answer.

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?