Use the function rule f left parenthesis x right parenthesis equals 3 x minus 2. Find the output f left parenthesis 1.5 right parenthesis.
A. 2.5
B. –2.5
C. 6.5
D. –6.5
We can plug in 1.5 for x in the function rule and simplify as follows:
f(1.5) = 3(1.5) - 2
f(1.5) = 4.5 - 2
f(1.5) = 2.5
Therefore, the output when x is 1.5 is 2.5, so the correct answer is A.
To find the output of the function f(x) = 3x - 2 for the input x = 1.5, substitute the value of x into the function:
f(1.5) = 3(1.5) - 2
Now, we can solve the expression inside the parentheses first:
3(1.5) = 4.5
Substituting this value back into the original expression, we have:
f(1.5) = 4.5 - 2
Simplifying further:
f(1.5) = 2.5
Therefore, the output f(1.5) is equal to 2.5.
The correct answer is A. 2.5.
To find the output of the function f(x) = 3x - 2 when x = 1.5, we substitute the value of x into the function and evaluate it.
So, let's plug in x = 1.5 into the function:
f(1.5) = 3(1.5) - 2
Now, we simplify the expression:
f(1.5) = 4.5 - 2
f(1.5) = 2.5
Therefore, when x = 1.5, the output of the function f(x) is 2.5.
Therefore, the correct answer is A. 2.5.