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injected with this anti- inflammatory agent is given approximately by C(t)=42.54e^-.01042t, where t is the number of hours after the injection and 0≤t≤90.   Question. What is the average...

30 percent of the men and 20 percent of the women attend night school. If 40 percent of all employees are men, what percent of all the employees attend night school

you have an investment account in which you invest \$6,500 at 6% annually.  The account is compounded annually

Two trains leave a station at 12:00 noon. One travels north on a track at 50 mph. The second travels east on a track at 70 miles per hour. At 1:00 PM the northbound train stops for one-half hour at...

A person riding a Ferris wheel with a diameter of 65 feet travels once around the wheel in 34 seconds. What is the average speed of the rider in miles per hour? Give your answer to the nearest tenth,...

It is estimated that the annual advertising revenue received by a certain newspaper will be R(x)=0.5x^2+4x+143 thousand dollars when its circulation is x thousand. The circulation...

Hello! I am very confused on how to go about solving this word problem. Please help me.   Fatuma invests a total of \$18,500 in two accounts paying 3% and 5% simple interest, respectively...

(a+b)2=(x-3a)(x-b)ex x has only one positive solution, find the relationship between a and b. Here, a and b are constants and satisfy a>b>0. Hint: consider the graph of y = Ae-x ,...

A ladder 15 feet long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 feet/sec, how fast is the top of the ladder sliding down the wall when the...