The volume of a pyramid is one-third the volume of a prism.
The formula for the volume of a pyramid is V = 1/3Bh
M - 12 = -3
You would be able to find what m is by finding a number that can subtract 12 and get -3.
Hope this helps and have a nice day!!!
You can use the sum of angles identities, then rearrange to put the result in the form of tangents.

Answer:
$319.2
Step-by-step explanation:
If you multiply 399 and 0.2 (because it's 0.2 out of 1) then you get 79.8. So you subtract 79.8 from 299 and get 319.2 dollars. I hope this helps! Please mark brainliest! <3