This question needs more information. So what if a diagram shows an 8 foot ladder leaning against a wall?
Would be the last answer because (n-3)times (n-3) is n^2-6n+9

Therefore, there are

millimeters in seven meters.
[1] y = -x + 5
3x + 3•(-x +5) = 10
0 = -5 => NO solution
Answer:
x = 4
Step-by-step explanation:
√x + 1 = 3
√x = 3 - 1
√x = 2
(√x)² = (2)²
x = 4