Answer: You will save $69.60
Step-by-step explanation: If you pay upfront for the year, you will be charged $29.00 per month for 12 months, for a total of $29.00 * 12 = <<2912=348.00>>348.00.
With a 20% discount on the monthly cost, you will save 20/100 * $29.00 = <<20/10029=5.80>>5.80 per month.
Over the course of a year, you will save $5.80 * 12 = <<5.80*12=69.60>>69.60 by paying upfront rather than monthly.