Tell whether or not f(x)= π sin 3x -4π sin 2 x is a sinusoid.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

If a is a nonzero real number then the reciprocal of a is

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)