45 less than twice a number is 5 times that number. write the ewuation and solve it

Which statement best describes the polynomial

What is not true about kl and mn? what is mn? (show your work)

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.