Let's break down the solution for the given question step-by-step.
First, we are given [tex]\( e = 25 + 20 \)[/tex].
### Calculation for [tex]\( e \)[/tex]:
[tex]\[ e = 25 + 20 \][/tex]
[tex]\[ e = 45 \][/tex]
Thus, the value of [tex]\( e \)[/tex] is:
[tex]\[ \boxed{45} \][/tex]
Next, we need to find the value of [tex]\( f \)[/tex] using the relationship [tex]\( f = 15e + 30 \)[/tex].
### Calculation for [tex]\( f \)[/tex]:
Using the value of [tex]\( e \)[/tex] we found, which is 45,
[tex]\[ f = 15 \cdot 45 + 30 \][/tex]
[tex]\[ f = 675 + 30 \][/tex]
[tex]\[ f = 705 \][/tex]
Thus, the value of [tex]\( f \)[/tex] is:
[tex]\[ \boxed{705} \][/tex]
Now, for part (i), we are asked to compute [tex]\( 302 + 15 \)[/tex].
### Part (i):
[tex]\[ 302 + 15 \][/tex]
[tex]\[ = 317 \][/tex]
Thus, the result for part (i) is:
[tex]\[ \boxed{317} \][/tex]
Finally, summarizing all the calculated values:
- [tex]\( e = 45 \)[/tex]
- [tex]\( f = 705 \)[/tex]
- [tex]\( 302 + 15 = 317 \)[/tex]
These values complete the step-by-step solution for the given question.
