Raymond B. answered 08/25/19
Math, microeconomics or criminal justice
45=L Perimeter=2(L+W)=150 2L+2W=150 2(45)+2W=150 2W=150-90=60 W=30
Area=LW=45(30)=1350 square feet.
Rose plants' location seems irrelevant.
But if planted every 3 feet, then there are 45/3=15 rose plants length wise and 30/3=10 width wise.
With 15 times 10 = 150 total rose plants in the garden.