Use Descartes' Rule of Signs to Determine the Possible Number $f ( x ) = x ^ { 5 } + x ^ { 4 } + x ^ { 2 } + x + 7$

question 130

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative real zeros for the polynomial
function.
- $f ( x ) = x ^ { 5 } + x ^ { 4 } + x ^ { 2 } + x + 7$

• A)0 positive zeros, 1 negative zero
• B)0 positive zeros, 0 negative zeros
• C)0 positive zeros, 2 or 0 negative zeros
• D)0 positive zeros, 3 or 1 negative zeros

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Definitions:

Pitman Gear

A component in the steering system of a vehicle that converts the angular motion of the steering column into linear motion needed to steer the wheels.

Recirculating Ball Gearbox

An older style of steering gearbox whose main components are a worm gear on the steering shaft, a ball nut that moves on ball bearings up anddown the shaft as the worm gear turns, and a sector gear thatengages with the ball nut and transfers steering inputs to thesteering linkage.

Ride Height

The height at which the vehicle should rest on its suspension. Front-to-back and side-to-side variations should be minimal.

Front

The forward-facing portion of a vehicle or object, typically where the main controls or features are located.