PLS HELP THIS IS FOR A TEST I HAVE 20 MORE MINUTES UNTIL IT SUBMITS ITSELF Your friend wrote and simplified an expression to represent the scenario below and they made an error. Identify what your friend's error was and what revision they can make to fix it.

"A chef added nine hot cubes to a soup, then removed six hot cubes. Finally, the chef removed 12 cold cubes from the soup. How much did the temperature change?"

Your friend's work:

9 - 6 - (-12)

3 - (-12)

-9

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?