Isolate the variable x.
1-2x=-x-3
1=x-3
x=4
Shiela is 0.61 meters taller than her son.
I think the equation would be 4x + 16= 56
She rented the kayak for 10 hours.
X= 3x + 6 / 3 = 6 (im pretty sure)
Sara's results probably do have a higher mean, if we take into account how William is way more willing to pay 20 dollars. Honestly, I think you got your chosen answers right! Just my opinion, as someone inexperienced.