Your answer is right !!!! X is -3 !!!
5 is the answer you’re going for
thank you for the information
but where is the question??????
Answer:

Step-by-step explanation:
Let x = the width of the garden
Then x + 3 = the length of the garden
Area of garden = length × width
A = lw = x(x+ 3)

width = x = 20 ft
length = x + 3 = 20 +3 = 23 ft

Check:

OK.
What is your question exactly? Because 1.814x10^10 is in standard form