Im in a quiz right !

delivery company charges 10¢ per cubic inch to deliver a package. if a box is 9 inches long, 7 inches wide, and 4 inches deep, what will it cost to be delivered?

a. $25.20

b. $36.20

c. $28.00

d. $63.40

Me. i can't figure out this question. give an explanation too. .

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

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”?