Algebra/trig. i literally have no clue

Since the base of our logarithmic function is unknown, we can just call it:

We are then given the point, (4,-2), so plugging in 4 for x and -2 for f(x) we get:

So our base is 1/2.

sine

step-by-step explanation:

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5