A recipe uses 2 cups of apple concentrate and 3.5 cups of water to make apple juice. If Marcus has 6 cups of apple concentrate, how many cups of water is needed to make apple juice?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Ihave trouble finding the nth term of a linear sequence

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.