Give me the answer to 9th grade Algebra 1 home work What the answer to find the vertex of each parabola 9th Algebra 1

Which statements regarding the diagram are true? check all that apply.

The sum of two numbers is 86, and their difference is 20. find the two numbers

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.