WGU Applied Algebra - WGU Applied Algebra FXO2 PFXP C957 Certification Exam
Question #6 (Topic: demo questions)
The graph shows the daily practice duration for a musician, where the number of days since the beginning of the month is along the horizontal axis and the number of minutes practiced per day is along the vertical axis
Based on the graph, what was the practice duration for day 8?
Correct Answer: A
Explanation:
This question asks us to interpret a value from a graph. The horizontal axis represents: Days The vertical axis represents: Practice duration in minutes We need to find the practice duration on day 8. To do this: Locate 8 on the horizontal axis. Move vertically until you reach the blue graph. Read the corresponding value on the vertical axis. From the graph, when: x=8 the blue graph is at: y=115 So the musician practiced for: 115 minutes
Question #7 (Topic: demo questions)
A vehicle is traveling away from a town at a fixed rate. After 1 hours, the vehicle is 200 miles from the town. After 4 hours, the vehicle is 395 miles from the town. Which function represents the distance, , between the vehicle and the town after hours?
Correct Answer: D
Explanation:
Because the vehicle is traveling away from the town at a fixed rate, the distance can be modeled by a linear function:
Because the vehicle is traveling away from the town at a fixed rate, the distance can be modeled by a linear function:
where: and We are given two points: and These mean: After hour, the vehicle is miles away. After hours, the vehicle is miles away. First, find the rate of change: So the vehicle is moving away from the town at a rate of: Now the function has the form: Use the point to find : Therefore, the function is: Check using :
Question #8 (Topic: demo questions)
The number of people auditioning for a game show is expected to be 4 times the number of people who auditioned last year. The function A(t) can be used to model the situation, where t represents the number of people who auditioned last year and A represents the number of people expected to audition this year. Which quantity represents the number of people expected to audition this year, given that 330 people auditioned last year?
Correct Answer: B
Explanation:
We are told that the number of people expected to audition this year is 4 times the number of people who auditioned last year.