Select the function that is even.
f(x) = sin(x)
f(x) = tan(x)
f(x) = cos(x)
f(x) = cot(x)

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?