The answer is 15 which is letter D
Answer:
No it isn't.
Step-by-step explanation:
A function gives just one
y
for every
x
.
In this case there will always be two
y
's for every
x
, because the reverse will be
y
=
+
√
x
or
y
=
−
√
x
Example:
x
=
4
→
y
=
−
2
or
y
=
+
2
So in this case the working would be 35-20= 15
Now we put in the formula. (15/20)*100 which gives us 75. 75% is your percentage change
Perimeter=2l+2w
2l+2w=272
l+w=136
l+57=136
l=79
