What is the value of the digit in the thoughts thousandths

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

X+ y = 5 ; x - y =3 solve using linear combination