1. Let hardcover books = X
Paperback books would be 4x -3 ( 3 less than 4 times)
Now you have:
X + 4x-3 = 447
Simplify:
5x - 3 = 447
Add 3 to each side:
5x = 450
Divide both sides by 5:
x = 450/5
x = 90
He has 90 hardcover books.
2. 300 miles / 25 miles per gallon = 12 gallons of gas.
12 gallons x $$ per gallon = $48 dollars
3. Subtract base pay from total:
1916 - 800 = 1,116 worth of commissions.
Divide commissions by percentage:
1116 / 0.09 = $12,400 total sales.
4.
Find the median of the heights: 65-50 = 15. 15/2 = 7.5
Median = 50+7.5 = 57.5
The equation would be |h-57.5| < 7.5
Answer:
-14y + 30
Step-by-step explanation:
Tell me if I am wrong but I think this is it.
Step-by-step explanation:
the slope of a line function is always the factor of x.
in our case here : 1/5
it is the ratio y/x indicating how many units y changes, when x changes a certain amount of units.
in our case that means y increases by 1 for every increase of x by 5.
now, the perpendicular slope simply changes x and y upside-down and flips the sign.
so, here the perpendicular slope is : -5/1 = -5
the line function looks therefore like
y = -5x + b
b is the y-intercept, and we get it by using the coordinates of the point for x and y :
-8 = -5×0 + b = b
so, the full line function is
y = -5x - 8
Martin's error : The graph of g(x) should be translated 3 units left (not right) from the parent graph.
<u>Concept - Horizontal Translation</u>:
If f(x) is a parent function, then
shifts graph of f(x) by <em>h</em> units to the left.
shifts graph of f(x) by <em>h</em> units to the right.
<u>Given:</u>
Parent function: 
By using concept of horizontal translation,
The graph of g(x) should be translated 3 units left from the parent graph.
i.e. Martin's error : The graph of g(x) should be translated 3 units left (not right) from the parent graph.
Learn more about <u>translation</u>:
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X would equal 2. the answer is A
