Distrubte and combine like terms.

7(5x+3y-6)+3(2x-9)

Can someone me do math because i am having a breakdown rn because i don’t get it

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error