Answer:
11 minutes
Step-by-step explanation:
Because she types only 140 words in 4 minutes so if you add
140+140=280
if you divide
140/4 you get 35
so every minute she types in 35 words. So multiply
11 times 35 and you exactly get 385.
(3x+4) units.
Working;
AM=AD+DM
=x+5+2x-1
=(3x+4) units
12x+1=-7
-1 -1
12x=-6
/12 /12
x=-1/2 or x=-0.5
