Select the correct answer from each drop-down menu. Gilbert is training for a bike race. As part of his training, he does practice rides on portions of the actual race course. Gilberts first practice ride
covers 5 miles of the course, and his second practice ride covers 9 miles of the course. Between these practice rides, he increases his average
speed by 2 miles/hour
These functions model the time it took Gilbert to do each practice ride, where x is his speed during the first practice ride.
Practice Ride 1
Practice Ride 2
The denominator of the function that models practice ride 2 represents the
To find a function that models the total amount of time Gilbert spent doing practice rides on the race course,
the functions
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where r the answers

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

c

step-by-step explanation: