Suppose that 20 students take a statistics exam worth 100 points. The standard deviation of the exam scores is 5 points. Which one of the following statements gives the most reasonable description of the distribution of exam scores?a. All of the individual scores are five points apart.
b. The difference between the highest and lowest score is 5.
c. The difference between Q3 and Q1 is 5.
d. A typical score is within 5 points of the mea

5x+2x=49

7x=49

x=7. 35 apples

step-by-step explanation: 4 cause 2+2=4

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is