D it's store d, it's the cheapest
It will take 7/8 of a minute because you just multiply 1/8 by 7
It should take approximately 27 days using the water at an average of. 450 gallons per day
<span>trapezoid area = ((sum of the bases) ÷ 2) • height
height = </span>trapezoid area / ((sum of the bases) ÷ 2)
height = 43.5 / ((6 + 8.5) / 2)
height = 43.5 / ((14.5) / 2)
height = 43.5 / (7.5)
height = 6 centimeters
Source:
http://www.1728.org/quadtrap.htm
Usually when you see f(x) or as yours is f(6) f with parenthesis is just a fancy way of saying y= so basically you plug six in for the x values of your question
