Answer:
9 is the right answer
Step-by-step explanation:
I. If c = - 4 and d = 10
then
= 
= 
= 9
Hope that help :D
Answer:
b. 
f. 17 hours
Step-by-step explanation:
Charges for coming to my house = $68 (this will be the constant of the equation)
Amount charged per hour labor = $17
hours = h
Total amount paid to Mike = 357
The equation that represents this situation can be expressed as:

Solve for h
(subtraction property of equality)

(division property of equality)

Mike was in my house for 17 hours.
Answer:
C
Step-by-step explanation:
It is false that city parks are part of the natural environment.
Since we are the ones who built them, they couldn't have been created by nature.