Two airplanes leave an airport at the same
time. An hour later they are 189 km apart.
If one plane traveled 68 km and the other
plane traveled 244 km during the hour,
find the angle between their flight paths.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.