Solve the problem.In 1981,  and  had the same population. The population of  continued to increase steadily, while the rate of population growth of  (although initially less than that of ) eventually overtook the growth rate

of City #2. The populations of two cities are modeled by the following equations:  , where  corresponds to the year 1981. In what year after 1981 did the cities have the same population?



A. 1986

B. 1984

C. 1987

D. 1985


Answer: A

Mathematics

You might also like to view...

State whether the function is a polynomial function or not. If it is, give its degree.f(x) = x5/4 - x6 + 2

A. Yes; degree 5/4 B. Yes; degree 5 C. Not a polynomial D. Yes; degree 6

Mathematics

Express as a difference of logarithms.log6 

A. log6 3 - log6 5 B. log3 5 - log3 3 C. log6 5 - log6 3 D. log6 5 + log6 3

Mathematics

Provide an appropriate response. An airport limo service charges riders a fixed charge of $18 plus $4.00 per mile. a. Write a cost function, , of riding in a limo for x miles.b. Write the average cost function, C, riding in a limo for x miles.c. How many miles must a rider go to have an average cost per mile of $4.90?

A. a. C(x) = 18 + 4x;
b. (x) = 
c. 20 mi
B. a. C(x) = 4 + 18x
b. (x) = 
c. 24.4 mi
C. a. C(x) = 4 + 18x
b. (x) = 
c. 45 mi
D. a. C(x) = 18 + 4x
b. (x) = 
c. 4.4 mi

Mathematics

Factor completely. If the polynomial is prime, then state this as your answer.-4r4 + 256r

A. -4r(r - 4)(r2 + 4r + 16) B. prime C. -4r(r + 4)(r2 - 4r + 16) D. -4r(r - 4)(r2 - 4r + 16)

Mathematics