SAT question 2e98b1df (Linear Equations In One Variable)

Question

On the first day of a semester, a film club has $90$ members. Each day after the first day of the semester, $10$ new members join the film club. If no members leave the film club, how many total members will the film club have $4$ days after the first day of the semester?

19

Difficulty:Easy

A

$400$

B

$130$

C

$94$

D

$90$

College Board · Accepted Answer

The correct answer is B. Choice B is correct. It's given that the film club has 90 members on the first day of a semester, and 10 new members join the film club each day after the first day of the semester. This means that after 4 days, 4 × 10 , or 40 , new members will have joined the club. Adding 40 members to the original 90 club members yields 130 members. Thus, the film club will have 130 total members 4 days after the first day of the semester.

CookSAT · Answer

Note: The function f(x)=90+10x models the total members x days after the first day. Evaluating f(4) gives the answer.

Explanation

Enter in Desmos:

Why the other choices are wrong

Student discussion

SAT Question 2e98b1df: Linear Equations In One Variable answer and explanation with Desmos solution

Explanation

Enter in Desmos:

Why the other choices are wrong

Student discussion