The temperature changed form -7 degrees f at 6 am to 7 degrees f at noon. how much di the tempeature increase? a. write an expression to represent this situation. b. simplify, and then write your answer in a complete sentence, answering the question being asked above.

What is the average rate of change for this function for the interval from x=2 to x=4 ?

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?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years