Answer:
There are no possible solutions
Step-by-step explanation:
Given:
Minimum number of coins Alexa has =28 coins
Number of quarters Alexa has = 17 quarters
Total amount in coins = $5.05 = 505 cents
Let number of dimes be =
coins
So we can have two inequalities.
1) Total number of coins
[Since minimum number of coins=28]
2) Total value of coins
[As 1 dime=10 cents and 1 quarter=25 cents]

Solving inequality (1)
Subtracting both sides by 17.

∴ 
Solving inequality (2)
Subtracting both sides by 425.


Dividing both sides by 10.

∴ 
On combining both solutions
and
,
we see that there are no possible solutions as number of dimes cannot be ≥11 and ≤8 at the same time.
I would first find the volume of the hole and multiply that by 2 because there's 2 holes.




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I would then find the volume of the entire cinder block.



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I would then substract.

The volume of the cinder blocks is 624 inches³
A fraction is something like 1/2 which is the same as half of one or 1/4 which is a fourth of one