can you help me with these math word problems?

For a door to meet specifications at a carpentry shop the width must be within 5/8 inch of the expected width of the door.The shop gets an order for doors that are 4 1/2 feet wide.Which of the following is an inequality that expresses the range of widths for acceptable doors? A.Ir-5/8I≤4 1/2 B.Ir-4 1/2I≤5/8 C.Ir+54I≤5/8 D.I4-54I≤5/8 use Cramer's rule to solve for X 2x-y=-8 x=3y=6 A.-18/7 B.30/7 C.20/7 D.37/7 Additional Details tickets to a local movie were sold at $4.00 for adults and $2.50 for students if 410 tickets were sold for a total of $1505.00, how many adult tickets were sold? A.230 B.335 C.90 D.320