Factor the following expression. x2 + 4x - 5
2 answers:
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(a) The dimensions of the base of the box are (8 -2x) and (10 -2x). The depth of the box is x. The volume is the product of these dimensions.
V = x(8 -2x)(10 -2x)
(b) A graphing calculator is suitable "technology". The process is ...
• write the equation in the calculator
• adjust the scaling so the curve fills the display area
• select the maximum point to reveal its coordinates
The value of x that maximizes box volume is about 1.5 inches.
V = x(8 -2x)(10 -2x)
(b) A graphing calculator is suitable "technology". The process is ...
• write the equation in the calculator
• adjust the scaling so the curve fills the display area
• select the maximum point to reveal its coordinates
The value of x that maximizes box volume is about 1.5 inches.