The half-life of a radioactive kind of iodine is 7 hours. How much will be left after 21 hours, if you start with 64 grams of it?

How to use order of operation in 20 divide by 4 multiply 5 = 1

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

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.