If one tenth, two thousandths and three millionths were added, what would be their sum? a) 0.102003
b) 0.10203
c) 0.123
d) 10.0023

Which statement about perfect cubes is true

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.

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !