Which expression is equivalent to |a|≤5 ? a ≥ –5 or a ≤ 5

a ≥ –5 and a ≤ 5

a ≤ –5 and a ≥ 5

a ≤ –5 or a ≥ 5

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?