Suppose that 17 inches of wire costs 68 cents, At the same rate, how much (in cents) will 39 inches of wire cost?
cents
?

17 inches of wire costs 68 cents,

Step-by-step explanation:

x=234

b=456

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post