Mark borrowed $3,450 to remodel the kitchen. How long before he pays off his loan if the rate is at 4% and his interest is $1,104?

Me because some of question i don’t understand

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab