Biruk wants to buy a book for $15.25 and a book for $4.85. he wants to pay with one $20 bill. use estimation to decide if this is reasonable. explain to what place value to round for an estimate that is useful in this situation.

It's not reasonable.

Step-by-step explanation:

Hi, to answer this question we have to add both book’s prices:

15.25 + 4.85 = $20.1

If he wants to pay with one $20 bill, it wouldn’t be reasonable, because:

20 <20.1

For an useful estimate, estimate to the nearest tenth:

15.30 +4.90 = 20.2

Still, he can’t afford the books because he is lacking 20 cents.

Feel free to ask for more if needed or if you did not understand something.

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day

thats not a system of equations, that is a solution