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4) A student worked the following equation, showing his steps. In which step did he make a mistake?

5(x-3)-2x=5x-11
STEP 1 5x-15-2x=5x-11
STEP 2 3x-15=5x-11
STEP 3 -2x=4
STEP 4 x=-2

A Step 1
B Step 2
C Step 3
D He made no error

Apple pie is removed from 350 degree oven. temperature of the pie t minutes after being removed id given by the function t(t)=72+268e-0.068t

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.