
we know that 7*7=49 so thus


therefor n=2
it is written as
Answer:
Step-by-step ef(x)=-2x+5……i
and f(-3x)=?
let x=-3x so that
-2x+5=-3x
x=5
substitutinx x into… i
f(x)=-10+5=-5
f(5)=-5………ii
now f(–3x)=f(-15)
scrutinizing… ii ,we can propose that
f(-15)=15.
Thus f(-3x)=15xplanation:
81 - 35+30 (55) = 26 therefore 26cm is ur final answer
(a.) is the answr. ............................................