7. Jorge wants to buy his father a gift that costs $32. He has already saved $18 for the gift. Jorge saves the same amount of money each week for the next 4 weeks. How much money, in
dollars, will Jorge have to save each week to have exactly enough money to buy his father
the gift?

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”?