Step-by-step explanation:
question number 2 first part X + 2 is equal to 7 .. x is equal to 7 - 2x is equal to 5 ..second part 3 x minus 1 is equal to 3 x is equal to 23 - 1 = 3x=24 x=24÷3=x=8ans
Answer:

Step-by-step explanation:

You have to put the number under 1 so you would get 1 over -27
Answer:
Option B is correct.
is equivalent to 
Step-by-step explanation:
Given expression: 
Using exponents power:
Given:
Apply exponent power :
⇒ 
⇒ 
⇒
Therefore, the expression which is equivalent to
is, 
If we take 24 h, and think that 150 bolts are produced during 1 hour,
then during 24 hours we will get 150*24 = 3600 bolts.
So, y = 150x represent the number of bolts the machine can produce in x hours.
150 bolts/h, and y =150bolts/h *24 h = 3600 bolts
Answer is B.