Answer:
<em>The plumber will charge $275</em>
Step-by-step explanation:
<u>Models</u>
Models are used to explain and predict the behavior of real objects or systems and are used in a variety of scientific disciplines.
The situation described in the question asks us to build a mathematical model for the charges for the service of a plumber.
The base fee is often called the fixed fee, which charged even if there is no service time. The plumber charges a base fee of $55.
The variable fee is that who changes for each hour worked. The plumber charges $55 per hour, so the charge for t hours of service is 55t.
The total charges of the plumber are modeled as:
C(t)=55t+55
If the plumber works t=4 hours, the cost will be:
C(4)=55*4+55=$275
The plumber will charge $275
Answer:
Step-by-step explanation:
A) win today's tennis match
Answer:
nxkckcbdhdjdmdndhdjdkdkdnd
![m + 5 > -1](https://tex.z-dn.net/?f=m%20%2B%205%20%3E%20-1)
![m > -6](https://tex.z-dn.net/?f=m%20%3E%20-6%20)
So, m is greater than -6. This means its either the third or fourth solution. Since the solution doesn't include -6, it would be the fourth option as the dot is hallow, which represents that the solution goes down to but does not include -6.
Answer:C. ![\frac{n!}{k!(n-k)!}](https://tex.z-dn.net/?f=%5Cfrac%7Bn%21%7D%7Bk%21%28n-k%29%21%7D)
Step-by-step explanation:
We know that a combination is a collection of the items where the order doesn't matter. It is a way to calculate the total outcomes of an event where order of the outcomes does not matter. It is denoted by C(n,k) or (n,k) or (n/k).
The formula for the number of combinations of n things taken r at a time is given by :-
![C(n,k)=(n/k)=\frac{n!}{k!(n-k)!}](https://tex.z-dn.net/?f=C%28n%2Ck%29%3D%28n%2Fk%29%3D%5Cfrac%7Bn%21%7D%7Bk%21%28n-k%29%21%7D)
Hence, C is the right option.