Answer:
six hundred sixteen thousand eight hundred forty five
Step-by-step explanation:
Multiply the binomials:
(3x + 4)(5x - 2)

Final answer
Option B is the final answer
Tangent always meets radius at 90° angle.
Angle ABC = 90° so Pythagoras' theorem applies.
r² + 4² = (r+2)²
r² + 16 = r² + 4r + 4
12 = 4r
r = 3