PLZ HELP!Professor Carlson calculates a 63% average on a chapter test from her first-year physics class. Fearing the test was too difficult, professor Carlson enters the scores into a computer program which generates the following box-and-whisker plot. Which of the following statements is an appropriate conclusion for professor Carlson to draw from the plot? A.
Every student in the class scored between a 72% and 92%. The test was not too difficult.
B.
Only about one-third of the class received a 72% or better. The test was obviously too difficult.
C.
At least half of the class earned received a 72% or less on the test. The test was probably too tough.
D.
Three-quarters of the class was able to earn a 72% or better on the test. Overall, students were able to perform. Thus, the test was appropriate.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.