Given the piecewise function
f(x)=5x+1 for 3¡Ü x<7
3x-5 for 7¡Ü x <10
Determine f(9)
Show work
To determine f(9) for the given piecewise function, we need to find the appropriate formula to use based on the value of x.
Since 7 ≤ x < 10, the second formula 3x - 5 is the one we will use.
Substitute x = 9 into the second formula:
f(9) = 3(9) - 5
= 27 - 5
= 22
Therefore, f(9) = 22.