Question

I don't understand either on of these so can someone please please please give me the answer to both, thank you so much!!!

Answer 1

53 is circumference to diameter, because if you do circumference/diameter you get PI.

54 is 10n + 7 because product stands for multiplication,
"a number" must be a variable, hence 10n.
"Add 7 to " can be read quite literally, 10n + 7

Correct answer is 10n + 7

Answer 2

i think 54 would be 10x+7 bit im not 100% sure.