Mr. Montgomery bought 1.7 pounds of sand for $2.80 what was the cost per pound round to the nearest cent if necessary

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.