12/3=4
so m=4
6x4=24
6x1=6
24-6=18
One minute later at 8:01pm. One lighthouse will flash 3 times (at 20, 40 and 60 seconds)...the other will flash twice (at 30 and 60 seconds). So they will both flash 60 seconds later, at 8:01
Answer:
Is this a multiple choice?
Step-by-step explanation:
Answer:x=7
Step-by-step explanation:
X+3=10
-3 -3
X=7
Replace f(x) with y
switch x and y
solve for y
replace y with f⁻¹(x)
f(x)=x-1
y=x-1
x=y-1
x+1=y
x+1=f⁻¹(x)
f⁻¹(x)=x+1
