Jill Say that 23/1000 can be written as 0.23 which explain whether or not Jill is correct

Find the slope of a line given the following two points

Could someone with number 1 and 2

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?