i really need help with this

1. A sinusoidal function can be differentiated only if the independent variable is measured in radians. 2. The derivative of an exponential function is always another exponential function. Multiple Choice Identify the choice that best completes the statement or answers the question. 3. Find f '(1) if f(x) = 3x +x+ 1. a. 3 C. b. 6 d. 8 4. Find f '(n) if f(x) = x - 2x + 1. a. 372 -2 C. b. 372 - T d. 5. Find f '(1) if f() = 3x-2 a. 3 1.5 b. -2 d. -1 6. Determine the equation of the tangent to the graph of y = (x - 3) at the point (-2, 1). . y = -&x - 15 y = -& +8 b. y = &+15 d. y = -2x - 3 7. Find the points on the curve y = 2 - - where the tangent line has a slope of 2. (2 2 ) and ( -2 2) c. 20 and (2 2 b. (1, 1) and 2, 2 d. -2, 5 and ( 1, 1)