Answer:
f^-1(x) = (x+20) / 12
Step-by-step explanation:
f(x) = 4(3x-5)
Let y be the image of f.
y = 4(3x-5)
y = 12x-20
y+20 = 12x
x = (y+20) / 12
f^-1(y) = (y+20) / 12, so
f^-1(x) = (x+20) / 12
7n +6= 4n -9
7n-4n= -6 -9
3n = -15
n = -15/3
n = -5
Answer:
exact form: -17/8
decimal form: -2.125
mixed number form: -2 1/8
Step-by-step explanation:
cmon this is freaking addition
+4 then +6 then +8 then +10 so the answer is 30
