Solve the problem.The decay of 923 mg of an isotope is given by A(t)= 923e-0.027t, where t is time in years. Find the amount left after 76 years.
A. 119
B. 898
C. 115
D. 60
Answer: A
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Estimate the value of the quantity.A piece of tissue paper is picked up in gusty wind. The table shows the velocity of the paper at 2 second intervals. Estimate the distance the paper travelled using 
A. 179 ft B. 182 ft C. 202 ft D. 101 ft
Solve the problem.Jarod is having a problem with rabbits getting into his vegetable garden, so he decides to fence it in. The length of the garden is 3 feet more than 2 times the width. He needs 48 feet of fencing to do the job. Find the length and width of the garden.
A. length: 17 ft; width: 7 ft B. length: 19 ft; width: 8 ft C. length: 15 ft; width: 6 ft D. length: 33 ft; width: 15 ft
Solve the problem.A scientist performs an experiment to produce a compound by adding various amounts of a catalyst to a chemical reaction. Her data can be modeled by the formula A = 0.09c + 3.86, where A represents the amount of the compound, in grams, produced when c milligrams of the catalyst are added to the reaction. According to the formula, how much compound is produced when 
of catalyst are added?
A. 2703.86 g B. 1185.00 g C. 30.86 g D. 27.00 g
Give the rectangular coordinates for the point.(5, 150°)
A. 
B. 
C. 
D. 