Jenny has 280 meters of fencing and wishes to form three sides of a rectangular field. the fourth side borders a river and will not need fencing. as shown below, one of the sides has length x (in meters). find a function that gives the area a(x) of the field in terms of x

a(x) = x*y = x*(280 - 2x) square meters

Step-by-step explanation:

In the figure attached, a plot of the problem is shown. Let's call y the length of the side that parallels the river

The perimeter that the fence cover is:

2x + y =  280 meters

Isolating y:

y =  280 meters - 2x

The area of the field is:

a(x) = x*y = x*(280 - 2x) square meters

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

answer: 5

step-by-step explanation: