Simplify the difference.
(6w^2 - 5w - 8) – (7w^2 + 4w - 2)

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.