Four friends bought tickets to the school play. If it cost then a total of $28, Which equation could be used to find how much each friends paid?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*