Find the missing term of the geometric sequence 64,,256

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Use sigma notation to represent the following series for 9 terms.