Page 630 - Algebra 1

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Multi-Step A rectangular playing field has a perimeter of 8x feet. Its length is 2 feet greater than 2x.
a. Write expressions for the length and width of the rectangle.
b. Write an expression for the area of the field.
c. The playing field is in a city park. The park is a large square with a side length of x2. Write and factor an expression for the area of the park that does not include the playing field.
Vertical Motion The height h of an object t seconds after it begins to fall is given by the equation h = -16t2 + vt + s, where v is the initial velocity and s is the initial height. When an object falls, its initial velocity is zero. Write an equation for the height of an object t seconds after it begins to fall from 14,400 feet. Then factor the expression representing the height.
Given the equation r = _kst , use the terms “jointly proportional to” and “inversely p
proportional to” to describe the relation in the equation such that k is the constant of variation.
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