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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

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?

Bank a charges a monthly service fee of $2.00 and per-check fee of $0.05, while bank b charges a monthly service fee $1.50 and a per-check fee of $0.10. which of these numbers of monthly checks will cause bank a to charge less in fees than bank b?