Answer:
y = 0.75x + 1
Step-by-step explanation:
Here, we want to write an equation in slope-intercept form to represent this information
Since $1 is the cost of 1 only, this represents our y intercept
It means if we are not interested in purchasing more than 1, our cost will be $1
Now, for each one bought after, we have a rate of $0.75 per one
Mathematically, that will be $0.75 times the number bought after
Hence. we have that;
y = 0.75x + 1
if 1, x = 0; so we have cost of 1 as $1
Answer:

Step-by-step explanation:
2 = 2 × 1
6 = 2 × 3
GCF = 2

It’s easy just find the slope and the answer is gonna be obvious
Slope= y2-y1/x2-x1
Slope = -2-(-1)/0-4 = -1/-4 = 1/4
Slope = 1/4x
So the answer should be C
Since it increases by 6%, that means you times the amount by an EXTRA 6%. I.e. 6220 x 1.06 = $6593.20
The number added to the polynomial is 
Explanation:
The given polynomial is 
We need to determine the number that is added to the polynomial to complete the square.
The last term of the polynomial can be determined by dividing the term 21 by 2 and then squaring the term.
Thus, we have,
Last term = 
Now, squaring the term, we have,
Last term = 
Thus, the number added to the polynomial by completing the square is 