Discuss WGU Applied Algebra (C957) Exam Topic 4 Question 4

The number of people auditioning for a game show is expected to be 3 less than the number of people who auditioned last year. The function can be used to model the situation, where represents the number of people who auditioned last year and represents the number of people expected to audition this year.

Which quantity represents the number of people expected to audition this year, given that 280 people auditioned last year?

AA(280)=277

BA(283)=280

CA(280)=283

DA(277)=280

Suggested Answer: A

The function represents the number of people expected to audition this year.

The input represents the number of people who auditioned last year.

The problem says this year's number is expected to be 3 less than last year's number. Therefore, the function rule is:

We are told that 280 people auditioned last year, so:

Substitute into the function:

So, the notation that represents the number of people expected to audition this year is:

This means if 280 people auditioned last year, then 277 people are expected to audition this year.

Therefore, the correct answer is:

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17 comments · newest first

Daniel 23 days ago

Agreed! A is clear and straightforward.

Dominga 28 days ago

A is the only logical choice here.

Erinn 1 month ago

D is definitely not right. It doesn't relate to last year.

Laine 1 month ago

C is wrong too. It adds instead of subtracts.

Lizbeth 1 month ago

B doesn't fit the question. Last year was 280.

Franchesca 2 months ago

I feel confused. Why not B?

Daniel 2 months ago

Yeah, A makes sense. Simple subtraction.

Dominga 2 months ago

I think it's A. 280 minus 3 is 277.

Cherilyn 2 months ago

I thought it was supposed to be 280 again, not less!

Trevor 2 months ago

A(280)=277 is definitely the right choice!

Judy 2 months ago

Wait, how can it be 277? Shouldn't it be more?

Taryn 3 months ago

Totally agree, option A makes sense!

Graham 3 months ago

It's 3 less than last year, so 280 - 3 = 277.

Eladia 3 months ago

I feel like I saw a question like this where we had to find the expected number by using a similar function. I think the answer is A(280)=277.

Hubert 3 months ago

Wait, does A(280) mean we plug in 280 to find this year's number? I thought it was the other way around.

Willis 3 months ago

I'm not entirely sure, but I think the function A(x) represents the number of people auditioning this year based on last year's auditions. So, A(280) should give us this year's number.

Mireya 4 months ago

I remember we practiced similar problems where we had to adjust numbers based on last year's data. I think it's just subtracting 3 from 280.

WGU Applied Algebra (C957) Exam - Topic 4 Question 4 Discussion