What is the sum the rational expressions below

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?

You estimate that a baby bird weighs 2 pounds. the actual weight of the baby bird is 1.5 pounds. find the percent error. round your answer to the nearest hundredth of a percent.