4) a student score is 83 and 91 on her first two quizzes. write and solve a compound inequality to find possible values for a thord quiz score that would give anverage between 85 and 90.

a. 85≤83+91+n/3 ≤90; 81≤n≤96
b. 85≤83+91/2+n≤90; -2≤n≤3
c. 90≤83+91+n/3 ≤85; 96≤n≤81
d. 83≤85+91+n/3 ≤90; 73≤n≤94

i don't understand this question

1. 👍 0
2. 👎 0
3. 👁 1,102
1. Average of three quizzes :

Av = ( 83 + 91 + n ) / 3

must be equal or greater of 85 and equal or less of 90

85 <= ( 83 + 91 + n ) / 3 <= 90

1. 👍 1
2. 👎 0
2. Ggvgh f

1. 👍 0
2. 👎 2
3. Too late but here you go answer is A I think

1. 👍 3
2. 👎 0

## Similar Questions

1. ### math

A student has passed 60 percent of the 20 quizzes he has written so far successfully. If the student writes 50 quizzes during the year, and passes 80 percent of the remaining quizzes successfully, what would his average percentile

2. ### Algebra

A student scores 83 and 91 on her first 2 tests. Write and solve a compound inequality to find the possible values for a 3rd test score that would giver her an average between 85 and 90 inclusive. I know she has to score between

3. ### math

7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at \$2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal

4. ### Algebra

Jesse Played two days of golf. On the second day, he got a score of six bellow par, or -6. His total score for the two days was o above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on

1. ### Math

Jackie scored 82 and 88 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between 80 and 85, inclusive. a. 80=

2. ### Math

esse played two days of golf. On the second day, he got a score of 6 below par, or -6. His total score for the two days was 0 above par, or 0. Define a variable then write and solve an equation to find the score jesse got on the

3. ### algebra

On the past two quizzes, a student scored a 75 and 83. Write and solve a compound inequality to find the possible values for the 3rd quiz score that would give her an average between 85 and 90, inclusive. average = sum of all

4. ### Math

Mariah took 4 quizzes in her class this past month. Her scores were 92, 94, 100 and 83 what was her mean score A.92.95 B.93.5 C.93.75 D.94.25

1. ### Stats, Statistics, Math

A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 229 students who completed all

2. ### math

A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 60, 80, and 89. Sara's quiz scores are 85,

3. ### math

A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 60, 80, and 89. Sara's quiz scores are 85,

4. ### Algebra

Write a proportion to find how many points x a student needs to score on a test worth 50 points to get a test score of 40%.