Match each letter listed to the correct family of elements. D
H
A
I

Noble gases
Halogens
Alkali earth metals
Alkali metals
Boron family
Nitrogen family

Plz me i need i will give a brain

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account