Siri earns $6 a day for house sitting. She spends $10 to replace a vase she accidentally broke. Alexa has $50 from her birthday and she spends $4 a day on coffee. How many days, d will it take until the girls have the same amount of money?

What is the midpoint of the segment below? (-4,-7) (5,6)

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

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?