She made an error in the STEP 1
she shouldnt multiply the numbers
Answer:
16
Step-by-step explanation:
Start by adding 9 to both sides, obtaining: √(x + 9) = 5.
Square both sides, obtaining: x + 9 = 25.
Subtract 9 from both sides: x = 16
Note that √(16+9) - 9 = -4, as required.
F(x)=-4(-1)-5
f(x)=4-5
f(x)= -1
-1 is your answer
Step-by-step explanation:
3.38 × 
is the scientific notation of 3,380,000
