If a is directly proportional to b/2 and a=1 when b=10, then what is the value of a when b=35

Christine went shopping and bought each of her six six nephews a? gift, either a video costing? $14.95 or a cd costing? $16.88. she spent ? $ 97.42 97.42 on the gifts. how many videos and how many cds did she? buy?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party