Question

Pleaseeeeee helppppppp

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. Gilbert's 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 increase his average speed by 2 miles/hour .


The denominator of the function that models practice ride 2 represent the

A . Increase in Gilbert’s average biking speed

B. Distance Gilbert’s travels

C . Time it takes Gilbert’s to travel 5 miles

D . Biking speed for the second practice ride .


To find a function that models the total amount of time Gilbert spend doing practice rides on the race course

A . Add

B. Multiply

C . Divide

D . Subtract

The functions

Answer 1

Answer: For plato family

Biking speed for the second practice ride .

Add

Explanation:

I just took the test

Answer 2

D . Biking speed for the second practice ride

Add

Explanation:

Given :

First practice ride:

Distance = 5 miles

2nd practice ride :

Distance = 9 miles

Time models for each practice ride ;

First practice ride :

a(x) = 5 / x

x = speed

2nd practice ride :

b(x) = 9 / (x + 2)

Recall :

Time taken: distance / speed ; compacting with time taken equation of the 2nd practice ride :

Hence,

Speed of 2nd practice ride = x + 2

B.) To obtain a function for the total amount of time :

We take the sum of the first and second practice time : a(x) + b(x)

5/x + 9/(x+2)