Answer: A. The apple takes 8 seconds to reach the ground.
-3x + y - 2z = 10 |* -1
3x - y +2z = -10
5x -2y -2z = 12
--------------------------- I add these equations term by term
8x - 3y = 2
-3x + y - 2z =10 ⇒ -3x + y - 2z =10
x -y +z = 23 | *2 2x - 2y + 2z = 46
----------------------------- I add these eq.
-x -y = 56
8x - 3y = 2
-x -y = 56
this is the system after i reduce it ( it has only two variables x and y)
As the function is
y = 10,000 + 350x , Here x is the number of months elapsed and y is the amount after x number of months.
This function is for the form
y = mx +b or y = b +mx
which is the form of a linear equation
So the given function is a linear function.
So a is true
a)The function is a linear function.
Also The function is increasing at a constant rate , So options C and E are also correct
So
A, C and E
Christy will have to work 50 hours to pay off her debt.
500 divided by 10 = 50.
Hope this helped!
