Multiple Choice

Directions: Read each item carefully and choose the letter of the correct answer.

1. Tricycle fare costs Php17 for the first kilometer and Php7.50 for every additional

kilometer. How far can Php47 go on a tricycle?

A. 5 km B. 6 km C. 4 km D. 7 km

2. Which of the given illustrates an exponential function?

A. The distance travelled varies directly as the speed.

B. The area of the square is

2 where s is the length of the side of a square.

C. Radioactive material has a half-life of 1500 years.

D. As x increases, the value of y also increases.

3. Half-life is the time required for a quantity to reduce to half its initial value. Which

of the following represents exponential function involving half-life?

A. = 0(2)

/ B. = 0(1/2)

/ C. = (1 + )

D. =



4. Which of the following defines an exponential function?

A. () = 2

2 B. () = 2 + 1 C. () = 3

D () =



2 +

5. Which of the following is an exponential equation?

A. 10−3 ≥ 100 C. () = 8

3

B. 12 = 144 D. (0.25)

+4 > (0.5)

5



6. What should be considered in solving an exponential equation?

A. Bases on both sides must be the same.

B. Bases on both sides must be simplified.

C. Exponents on both sides must be the same.

D. Exponents on both sides must be simplified.

7. What is the value of x in 3

+1 = 9?

A. 4 B. 3 C. 2 D. 1

8. What is the value of x in the exponential inequality 25 < 125−3?

A. < 6 B. > 7 C. < 8 D. > 9

9. The function () = 3

−

is a decreasing function. The function () = 3



is

___________________.

A. Increasing C. slanting

B. Decreasing D. either increasing or decreasing

10.In the function, () =

1

2

(1.5)



, find f(x) if x = -1, 0, 1

A. f(x) = 0.22, 0.33, 0.5 C. f(x) = 0.22, 0.5, 1.125

B. f(x) = 0.5, 0.75, 1.125 D. f(x) = 0.33, 0.5, 0.75

11.Which of the following statement is always true?

A. For any given x-value, the y-value of = 2



is negative.

B. For any given x-value, the y-value of = 2



is all real numbers.

C. The domain of exponential function = 2



is positive numbers.

D. The domain of exponential function = 2



is all real numbers.

For item numbers 12-13, refer to the given function () = −()

− .

12.What is the domain of the exponential function?

A. {| ∈ ℝ} C. {| ∈ ℝ, > −4}

B. {| ∈ ℝ, < 3} D. {| ∈ ℝ, < −5}

13.What is the range of the exponential function?

A. {| ∈ ℝ} C. {| ∈ ℝ, > −4}

B. {| ∈ ℝ, < 3} D. {| ∈ ℝ, < −5}

14.What is the zero of () = 2

− 8?

A. 0 B. 1 C. 2 D. 3

15.What is the y-intercept of () = −(

5

12

)

?

A. -1 B. 0 C. 5/12 D. 1


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