F(x) = 112 - kx
f(-3) = 121
f(-3) = 112 - k(-3)
f(-3) = 112 + 3k
121 = 112 + 3k
121 - 112 = 3k
9 = 3k
9/3 = k
3 = k <===
35 x 0.14 = 4.9
The total tip would be $4.9
Yes very because if you use the wrong one your whole formula will turn out wrong
The answer would be 198/300. That simplified would be 33/50. If you want a percent, it would be 66%.
