If I have a 100% in my class and I made a 45% out of a 100% on a test what will my grade be?

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.