Which of the following is a true statement about functions? a. if a and b are matrices, then ab = a+b. b. if f and g are functions, then (fog)(3)=(gof)(3) c. if f is a function, then f(3h)=3f(h) d. if f and g are functions, then (f+g)(1)=(g+f)(1)

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

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?

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10