Which expressions are equivalent to 7(3/4 x -3)?

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

How is working backward similar to solving an equation?