Answer:
20160 ways
Step-by-step explanation:
The coefficient of a is 7
<span>If each shirt costs $10 within the purchase of 1 to 75 shirts, the function will be: 10x (with x being the number of shirts, from 1 to 75). If each shirt costs $7.50 within the purchase of 76 to 150 shirts, the function will be: 7.5x (with x being between 76 and 150). Finally, if each shirt costs $6 within the purchase of 150 or more shirts, the function will be: 6x (with x being any number from 150 up). </span>
Y=x^2
substitute the values into the original equation
0=4^2
0=16
No it does not satisfy the equation because 0 does not equal to 16
X = -2 + y
-16x - 3y = -25
Let's substitute x into the second equation, since the first equation already tells us what x is.
Multiply -16 by x, which is (-2 + y)
-16(-2 + y) -3y = -25
Simplify.
32 -16y -3y = -25
Simplify. Get the variable on one side.
-19y = -57
Divide both sides by -19 to solve for the variable.
y = 3
Now plug y = 3 into one of the equations to find x. I'll use the first equation, since it's easier.
x = -2 + y
x = -2 + 3
x = 1
The answer is x= 1, y =3, which may be written as (1, 3). Hope this helps.