Please help with wrong one and remaining one! :) Chapter 7: 7.3 Using the Central Limit Theorem (Uniform) Homework

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

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.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola