Johnny paid $42 for 12 cartons of orange juice. What is the unit rate, in dollars per carton, of orange juice that Johnny paid? $3.50 per carton
$3.00 per carton
$4.00 per carton
$4.50 per carton

Can someone me and do the problem plz so i can understand it more better

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?