One current schools question and answer asked students to declare what they consider is the most important element for a student to do in order for you to attain success. The one which response stood out from the rest was practice. Successful persons commonly are not born successful; they become successful through hard work and determination. If you would like to complete your goals, keep this in mind! shown below are one of the answer and question example that you will possibly utilise to practice and supercharge your practical knowledge and also give you insights that will help you to preserve your study in school.
Question:
Which exponential function is represented by the table? f(x) = 2(2x) f(x) = 0.8(0.8x) f(x) = 2(0.8x) f(x) = 0.8(2x)
Answer:
table
x f(x)
-2 0.2
-1 0.4
0 0.8
1 1.6
2 3.2
Look that the pair of data (0, 0.8), it means f(0) is 0.8
Given
that a^0 = 1, means that the coefficient of the function has to be 0.8
and you discard the first and the third options.
You have to replace the values of x in the equations and compare the results.
For f(x) = 0.8 * (2^x) you get
x f(x) = 0.8 * (2^x)
-2 0.8 * (2^-2) = 0.8 / 4 = 0.2
-1 0.8 * (2^-1) = 0.8 / 2 = 0.4
0 0.8 * (2^0) = 0.8 * 1 = 0.8
1 0.8 * (2^1) = 0.8 * 2 = 1.6
2 0.8 * (2^2) = 0.8 * 4 = 3.2
As you can see these results are the same of the table of the question, so the function is f(x) = 0.8 (2^x).
Answer: f(x) = 0.8 * (2^x)
They can potentially hopefully guide the student deal with the question by make use of the questions and answer examples. Then would possibly have some sharing in a group discussion and also study with the classmate concerning the topic, so another student also take up some enlightenment and still keeps up the school learning.