I need to find the equation of the graphed line.

y=-x-7

Step-by-step explanation:

So the line goes down one unit for every unit it goes to the left.

Slope is rise over run which would be -1/1 (simplify to -1)

The line crosses the y axis at -7

So to put it in slope-intercept form (y=mx+b) it would be y=-1x-7

You don't have to include the one in -1x because its the same as saying -x

332 ft²

Step-by-step explanation:

The total area of the fish tank is the sum of the areas of the base and the walls.

The area of a rectangle is A = side 1 × side 2

Base

A = 12 ft × 5 ft = 60 ft²

2 8×12-walls

A = 8 ft × 12 ft = 96 ft²

2 walls: 2 × 96 ft² = 192 ft²

2 5×8-walls

A = 5 ft × 8 ft = 40 ft²

2 walls: 2 × 40 ft² = 80 ft²

Total area: 60 ft² + 192 ft² + 80 ft² = 332 ft²