'dz' because d and z are different values.
Answer:
A) y= 40x+100
B) 
Step-by-step explanation:
To solve this, we can set up an equation using y=mx+b.
'b' is the initial cost, whereas 'm' is the monthly cost. This gives us the equation:
A): y=40x+100.
For part B, we can solve for the inverse by switching the x and y. This gives us:
x= 40y+100
Now, continue simplifying to isolate the 'y' on a side:
x-100=40y

Can you get a better picture of that?
8. 4j -2j -5k +3k (combine like terms)
2j -2k
B
9. -6m+4m +2n-3n
-2m-1n
D
10. ( 2x-1) + (3x-1) +(3x-1)
2x+3x+3x -1-1-1
8x-3
D
The distance from the external point ^2 = The external segment of the secant * the full length of the secant.
tangent distance = 6
External portion of the secant = 3
Full length of the secant = x + 3
6^2 = 3*(x + 3) Remove the brackets.
36 = 3x + 9 Subtract 9 from both sides.
36 - 9 = 3x
27 = 3x Divide by 3
x = 9 <<<<<<<Answer.