What is 4/5 x for x =5/8? halp pls

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Choose the more precise measurement. 26.4 cm or 8.39 cm

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]