Write an expression. Simplify if possible. Cruz has d $10 bills and 4 fewer $20-bills than he has $10-bills. Enter an algebraic expression to represent how much money Cruz has in dollars. Simplify the expression, if possible.

The simplified expression is .

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Amanufacturing company produces engines for light aircraft. the graph shows the number of engines produced each year since the company started operations. the data plot can be represented by the function . based on the scatter plot, we can predict that in the ninth year, the company will produce engines.