X=20. Because that line is 180 and u subtract 40 and u do 140/7= 20
241/4 or 60.25......................................
Final Answer: 
Steps/Reasons/Explanation:
Question: Solve 
.
<u>Step 1</u>: Simplify 
to 
.
<u>Step 2</u>: Regroup terms.
<u>Step 3</u>: Add 
to both sides.
<u>Step 4</u>: Simplify 
to 
.
<u>Step 5</u>: Multiply both sides by 
.
× 
<u>Step 6</u>: Simplify × to 
.
<u>Step 7</u>: Divide both sides by 
.
<u>Step 8</u>: Simplify 
to 
.
<u>Step 9</u>: Switch sides.
~I hope I helped you :)~
Part A
Yes y is a function of x. Specifically the equation is y = x^5
For any given input, there is exactly one output
Notice how if x = 1 then y = x^5 = (1)^5 = 1
Notice how if x = -1 then y = x^5 = (-1)^5 = -1
Notice how if x = -2 then y = x^5 = (-2)^5 = -32
Notice how if x = 2 then y = x^5 = (2)^5 = 32
In general,
x^5 = x*x*x*x*x
there are five copies of x multiplied
A more specific example
3^5 = 3*3*3*3*3
there are five copies of '3' multiplied
=====================================================
Part B
All we do is replace x with 4 and use PEMDAS to simplify
f(x) = 2x+12
f(4) = 2(4)+12
f(4) = 8+12
f(4) = 20
The value of f(4) is 20
What does it mean? It is the total cost of renting the bowling lane for 4 hours. If you rent it for four hours, then you'll pay a total of $20.
The portion 2x = 2*4 = 8 is the variable cost which depends on how long you play. The more hours, the more the variable cost goes up
The fixed cost is 12. This is always fixed as this is the price to get in the door. If you play for 0 hours, but somehow got in the door, then you still pay $12
In total, variableCost+fixedCost = 8+12 = 20 = totalCost
(2 + a) = (a + 2) it's commutative property
(a + 2) - 7 = a + (2 - 7) it's associative property
2 - 7 = -5 it's subtraction
Answer: distributive property { a(b + c) = ab + ac }
