Who Likes this Among Us Drawing (It's not fake I drew it my self)

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =