5. A researcher predicts that the population of Philippines will be 12.3 million
in 2012 and will increase by about.13 million per year until 2022. This
expressed as f(x) = 0.13x + 12.3, where x is the number of years since 2012
what will be the estimated population 5 years after?
A. 15.2 million B. 14.12 million
C. 13.50 million D. 12.95 million
6. A phone manufacturer determines that its profit, P, in pesos, can be modeled
by the function P(x) = x3 + 5x2 + 3x + 1, where x represents the number of
phones sold. What is the profit when x = 10?
A. 1531
B. 5531
C. 10 531
D. 50 531
7. A researcher establishes that a patient's reaction time, R in minutes, to a
dose of a particular drug is R(d) = d3 +3d2 - 8, where d is the amount of
drug, in milliliters, that absorbed in the patient's blood. Find the patient's
reaction time when d = 3.
A. 192
B. 92
C. 60
D. 46
8. The volume of a rectangular solid is represented by V(x) = 2x3 + x2 - 2x - 1.
The length of the solid is given by 7(x) = 2x + 1, and the width is given by
w(x) = x + 1. What expression represents the height of the solid?
A. x - 1
B. x-2
C. x-3
D. x-4
9. A pool is being filled with a large water hose. The height of the water in a pool
is determined by the function F(x) = 7x2 - 5x + 10. Previously, the pool had
been filled up with a different hose. Then, the height was determined by the
function P(x) = 3x2 - 6x - 4. What polynomial represents the difference in the
height of the water in the pool between two hoses?
A. 4x² - 11x + 14
B. 4x² - 11x + 6
C. 4x² + x + 14
D. 4x² + x + 6​