Determine the equivalent system for the given system of equations:
2x + 3y = 7
4x – 2y = 4
a.2x + 3y = 7
8x – 4y = 4
b.2x + 3y = 7
6x + y = 11
c.-2x – 3y = 7
4x - 2y = 4
d.2x + 3y = 7
6x + y = 4

What is the distance between (–2 1/2,-3) and (1, –3)?

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

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 ?