Answer:
Step-by-step explanation:
It is already in standard form and can be expressed in scientific form as:

Answer is 9
To get this answer, we replace h with 2, and replace r with 7. This is because h = 2 and r = 7 is given to us
So
h+r = 2+7 = 9
Answer: Lol
B (-8,-5)
D (-10,-4)
C (-8,3)
Step-by-step explanation: