Answer:
step 2 to step 3
Step-by-step explanation:
step 2
2x - 7 = 3 ( add 7 to both sides )
2x = 10 ( error was made here in that they had - 4 )
The cross section is 10 ft by 15 ft
1 + 1 + 20 cents + 3 cents = $2.23
Your answer is x=0...............................................