Answer:
f'(x) = b
Step-by-step explanation:
f(x) = bx
f' (x) = d/dx (bx)
using d/dx ( a * x ) = a
f' (x) = b <-- solution.
Answer:all real numbers
B
x + 112 + 133+128+100+120= 720
x + 593 = 720
x = 127
80,10,66
Hope this helps :)
