The recursive formula an = an-1 + 5 models the amount of money Devon saves each week. Devon started with $40. How much money will Devon have saved after 10 weeks?

What is the area of the shaded sector?

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?

Amap has a scale of 3.5 inches = 20 kilometers. if the distance between two cities on the map is 4.9 inches, what is the actual distance between the two cities?