Question

3. Assume that a company sold 5.75 million motorcycles and 3.5 million cars in the year 2010. The growth in the sale of motorcycles is 16% every year and that of cars is 25% every year. Find when the sale of cars will be more then the sale of motorcycles.

(SHOW WORK)



In a survey in 2010, the population of two plant species were found to be growing exponentially. Their growth is given by these equations: species A, and species B, , where t = 0 in the year 2010.

Answer 1

Answer: 7 years

Explanation:

year 1 5.75 (million) x 1.16 (16 percent ) = 6.67 motorcycles

year 2 6.67 x 1.16 = 7.7372

year 3 7.74 x 1.16 = 8.9784

year 4 8.98 x 1.16 = 10.4168

year 5 10.42 x 1.16 = 12.0834

year 6 12.09 x 1.16 = 14.0244

year 7 14.02 x 1.16 = 16.2632

year 1 3.5 (million) x 1.25 (25 percent) = 4.375

year 2 4.375 x 1.25 = 5.46875

year 3 5.47 x 1.25 = 6.8359

year 4 6.84 x 1.25 = 8.5449

year 5 8.55 x 1.25 = 10.6875

year 6 10.69 x 1.25 = 13.359375

year 7 13.36 x 1.25 = 16.7