The length of a rectangle is three times its width, w. Write three different expressions to describe its perimeter. can someone pls help me with that question?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.

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