Sam wishes to enclose an 800 ft2 rectangular community garden. She’ll enclose three of the
sides with wooden fence that costs $4.20/foot to install. The fourth side is visible from the
road, so on that side she’ll build a decorative stone wall that costs $6.00/foot to install. Use
calculus to determine the minimum possible cost to enclose the garden according to Sam’s
specifications. (10 p

8

step-by-step explanation:

b). 4320 have a nice day

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b