The irrigation arm is 300 ft. 300 ft is just the radius. The diameter is 600, because to get the diameter you must multiply the radius by two. So 600 is the land the irrigation arm covers.
He needs to make $4,000 in sales in order to hit $575 so if he earns more than $4,000 in sales then he will exceed his goal. I did 575-455=120 to see how much he needs. Then I did 0.03×4=0.12. Well if you add 0's you will get 120 because the decimal will move so then I added 3 0's to get 0.03×4,000=120. Hope this helped.
3x+2≤5(x-4)
distribute 5
3x+2≤5x-20
minus 3x both sides
2≤2x-20
add 20 both sides
22≤2x
divide by 2
11≤x
x≥11
