Plz help me! I’m not good in maths

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points

What is the sum of the first 8 terms of the geometric series