The answer is all real numbers
Answer:

Step-by-step explanation:
Divide both sides by 

Simplify:
; 
Answer:
= -25x-19/10
Step-by-step explanation:
Answer:
D. 1/15
Step-by-step explanation:
Actual tree = 10 ft = 12 × 10 = 120 in.
Model tree = 8 in.
Scale factor = model tree/actual tree
Scale factor = 8/120
Scale factor = 1/15

Step-by-step explanation:
1) Collect like terms.

2) Simplify.

So, therefor, the answer is -17y - 16z + 4.