Tessa has saved $9,215 from doing his chores. For each hour of chores he completed, his parents gave him $45. About how many hours of chores did he do?

Could someone with number 1 and 2

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.