Coefficient of x^2 in expansion of (x+2)^5

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units