H=2b+6 and you are told that b=8 so
h=2(8)+6
h=16+6
h=22cm
Answer:
Step 3
Step-by-step explanation:
Given

Required:
Determine the first step where she made mistake
Her Step 1:
--- This is correct because she solved the bracket first
Her Step 2:
--- This is correct because she solved 3^2 as 9
Her Step 3:
--- This is incorrect because 23 * 4 is not equivalent to 9 * 4
Hence, her first mistake is in step 3.
The correct expression would have been

Then

12/35 is simplified, as you cannot divide it into smaller numbers by a common factor.
I hope this helps!