Ok so what y ou want to do it to max space, lie it diagonally
use pythagoren theorem
first convert the units
4'=4 feet
8''=8 inches
convert to inches
4 feet times 12=48 inches
so
pythagorea theorem is
a^2+b^2=c^2
c=hypotonuse
a and b are legs
in a right triangle
8 and 48 are the legs
fidn hypotonuse
8^2+48^2=c^2
64+2304=c^2
2368=c^2
8√37=c
aprox
48.66=c
4 feet amd 0.66 inches
You will read for 45 minutes if your brother reads for 15 minutes.
<em><u>Explanation</u></em>
You decide to read 30 minutes longer than your brother reads.
If your brother reads
number of minutes, then 30 minutes longer than
minutes means
minutes.
As the number of minutes you read is
, so the equation will be: 
When your brother reads for 15 minutes, then we will just <u>plug
into the above equation</u>. So.....

So, you will read for 45 minutes if your brother reads for 15 minutes.
What is the equation you are solving?
Answer:
A
Step-by-step explanation:
(f + g)(x) = f(x) + g(x) , thus
f(x) + g(x)
= 4x + 1 + x² - 5 ← collect like terms
= x² + 4x - 4 → A