If the simple interest on $2,000 for 8 years is $1,120, then what is the interest rate?

Alawn mower manufacturer incurs a total of 34,816 in overhead costs and 388 per lawn mower in production costs. how many lawn mowers were manufactured if the average cost of productions is 660

Place the following steps in order to complete the square and solve the quadratic equation,

Ihonestly have no clue if it's each or none.