BRAINLIEST There are 100 student's taking a test. There are three questions that are worth 5 marks on the test.
30% of the students got all 3 questions right
40% of the sudents got 2 questions right
25% of the students got 1 question correct
5% of the students got 0 right.
What is the overall class average for the test?

Three coins are flipped. what is the probability that there will be at least two tails?

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

How do you use the elimination method for this question? explain, because i really want to understand!