Answer: 20%.
Step-by-step explanation:
Given, The price of a shirt is marked down from $12.50 to $10.00.
Previous price = $12.50
New price = $10.00
Change in price = Previous price - New price
= $12.50 - $10.00
= $2.50
Now, the percent decrease of the shirt = 
Hence, the percent decrease of the shirt = 20%.
Remember x is x and f(x) is same thing as y.
f(5) = 4
It is same thing as saying, when x = 5, y aka f(x) should be 4. Aka the point (5,4)
Let’s look at D, if x =5 then f(x)=5? No, it should equal 4. So this is wrong. It is also not linear. So NOT D
Lets look at C, if x =5 then
1/5(5)+3 =
5/5 + 3 =
1+3 =
4
So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, but it is not linear. So NOT C
Lets look at B, if x=5 then,
2^5 -28 =
32 - 28 =
4
So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, AND it is linear SO THE ANSWER IS B
Check A too, it gets y=14 so thats wrong as it is not 4.
The answer would be 2 and 3/10. To find this, I multiplied 1 and 1/2 by 2 and 3 and 1/2 by two. So, now to make 3 dozen muffins, a recipe uses 7 cups of flour. I did this because obviously dividing 3 and 7 are easier and its hard to find how many cups of flour make 1 dozen when you have the equation for 1 and 1/2 because 1 doesn't go into 1 and 1/2 equally. Now, with the new equation, I can just divide 3 by 3 to get 1 (which would be 1 dozen muffins) and also divide 7 by 3 to get 2.3. 2 is obviously the whole number in the mixed number and .3 is the fraction, which is 3/10. Hope this helps!
Answer:
x = -1
Step-by-step explanation:
If both the x values are the same it will be a vertical line and the equation will be x = whatever the x value is in the ordered pair.
