8 pounds of ground beef costs 23.31 what is the cost per pound? how would you round answer to the nearest cent. Can somebody help me with that.

23.31 / 8 = 2.91375

Since 3 is less than 5, the cost per pound is $2.91

I need somebody to help me with this question 4 over 5 divide 8 over 3 subtract 1 over 5, is it 1 over 15 or 8 over 35, 1 over 10 or 12 over 37, I'm having a hard time understanding it.

Why don't you just type it using the language of arithmetic?

did you mean:
(4/5) รท (8/3) -1/5 ?
then
= (4/5)(3/8) - 1/5
= 3/10 - 2/10
= 1/10

remember , when dividing one fraction by another
write down the first fraction, TIMES the reciprocal of the second. That is what I did above.
Of course follow the order of operation, multiplication and division comes before addition or subtraction.

I'm having problem understanding convert the fraction to a decimal and round to the tenths place 15 over 17,can somebody help me with this question.

Divide the numerator by the denominator.

15/17 = 0.882

The tenths place is the number just to the right of the decimal. If the next number is 5 or more, round the number in the tenths place up to the next number,

when I put 0.8 it was wrong, can it 0.9 or 0.7 or 0.6,

0.882

If the next number is 5 or more, round the number in the tenths place up to the next number,

15/17 = 0.9

I'm having problem adding 4 2/5+4 2/6 I even don't understanding the insert the appropriate symbol<,>, or = 0.4 blank 0.8, is it <, >, or = I need all the help I can get right now

*facepalm* Could you maybe post as a separate question not as a continuous chain?

Anyway 4 2/5 = 22/5
4 2/6 = 2

Whoops sorry

4 2/6 = 26/6
22/5 = 6*22 / 30
26/6 = 26*5 / 30

thus we have
(6*22 + 26*5 )/30

so we have 262/30
= 8 22/30 = 8 11/15