You should not drive the car until the brakes are repaired.
use your emergency brake if in motion, if not in motion get new brakes!
The power brake vacuum booster is failing.
The power brake booster may be failing.
The power brake booster is failing.
You should not drive the car until the brakes are repaired.
You should not drive the car until the brakes are repaired.
Your brakes are failing
Worst case? Fatal crash.
It probably means that either the brake fluid is leaking or the brakes are failing. You should get it checked out. Can be that the master cylinder is low of brake fluid. Unless you have a leak this is a sign that your brake pads more than likely need replacing. As the pads wear the fluid level goes down. Inspect your brake pads.
The brake lights come on. The alternator should maintain voltage (14.2) unless the alternator is failing or the battery is nearing end of life.
The power brake vacuum booster is probably failing.
If you are failing test you should seek help from your professor or another expert on the topic you are failing. If you are not studying you should try studying.