Could you help me solve this problem ASAP :D

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?