I believe it's 104. You would set it up as a fraction so:
50/13 and 400/x.
Then you would cross multiply so 13x400 is 5,200. So this divided by 50 = 104. Hope I helped!
Answer:
About 11%
Step-by-step explanation:
45 divided by 5 = 9
100 divided by 9 = 11.11111 (It goes on forever)
F(15) = -15 + 7
f(15) = -8