Algebra 2 sequences and series I need help not a link and I keep getting a link

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

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

What is the perimeter of an equilateral triangle if each side is (x+3)?