Question

Jenny has $30 in her piggy bank and she saves $5 per week of her weekly allowance. Select all of the expressions that represent this situation.

A.) y=30x+5
B.) y = 5x + 30
C.) an = an−1 + 5, an−1 = 30
D.) an = an−1 + 30,
an−1 = 5

Answer 1

i know b is one of them. i dont knwo what an means in the other two