Answer:
A. and C.
if you simplify the expressions, you will see which ones are equal to the expression given
The legs are defined by
. The Hypotenuse if defined by
. The perimeter is defined by:

D. P(x) = 2x √2 + 4x
let's set up an equation:
x-4=9
solve normally:
x=13
Answer:
7 quarters are spent for throwing 350 food pebbles in pond.
Step-by-step explanation:
Given:
Reggie receives 50 food pebbles for every quarter he spends.
Number of food pebbles he has = 350
Let the number of quarters spent for 350 pebbles be 'x'.
Now, using proportion and cross multiplication method, we can find 'x'.
<u><em>1 quarter is equivalent to 50 pebbles thrown in pond.</em></u>
<u><em>So, 'x' quarters is equivalent to 350 pebbles thrown in pond.</em></u>

So, 7 quarters are spent for throwing 350 food pebbles in pond.