Answer:
He worked for 3 hours.
Step-by-step explanation:
you can solve this by muiltipling the amount of hours by the kilograms done in an hour.
F(x) = x²-81
g(x) = (x-9) -1(x+9)
= (x-9) -x-9
g(x) • f(x)
= [x²-81 ] • [ (x-9) -x-9 ]
=[ x²-81 ] • [ (x-x -9-9) ]
= [ x²-81 ] •[0-18]
= [ x²-81] •[ -18]
= -18•x² +-81•-18
= -18x²+1458
I hope this helps you
6x+2=7.2
6x+2=14
6x=12
x=2
X/4 = -9
x/4 = -9/1
cross multiply
x = -36
Answer: 1 x 24, 2 x 12, 3 x 8, and 4 x 6.
Step-by-step explanation: The factor pairs of 24 are: 1 x 24, 2 x 12, 3 x 8, and 4 x 6.
Hope This Helps
