The table gives some information about the heights of 60 boys.
Least height
Greatest height
Lower quartile
Upper quartile
Median
142 cm
181 cm
149 cm
160 cm
156 cm
a) Complete the boxplot for this information.
יייייי
cm
130
140
170
180
150 160
height (cm)
(3)
b) Work out an estimate for the number of these boys with a height between
149 cm and 181 cm.
30
+
(2)
Total marks: 5

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

b segment jm is correct i think

6-3=3

3*3=9

9+12=21

21/3=7

7*8=56

56 is your answer