Which expression has a value that is equal to the given expression when n = 8? 2n + 10
A. n² + 5
B. 3n
C. 2(n+5)
D. 10n + 2

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).