The slope of the line below is 2. Use the coordinates of the labeled point to find a point slope equation of the line.
10
(1.9)
O A. y-9--2(x - 1)
B. y + 9 --2(x+1)
C. - 9. 2(x - 1)
D. y + 9 + 2(x + 1)

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?