6y-5=7 the algebra solve it

The class wants to raise a total of $750.if they receive a profit of $1.25 from each candybar sold, how many bars must they sell to reachtheir goal

Sorry guys but as you have a small brain

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000