The exact value of 25 3/2​

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Can someone answer this question? : )

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