Aaron took out a 30-year mortgage for $100,000 at 7%. How much will he pay over one year? (Hint: multiply the monthly mortgage payment by 12.) I assume $536.82 and multiply 12 which is $6441.84??

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.