1. Does the frequency distribution given appear to be normal? Years of service Frequency
1-5
5
6-10
20
11-15
25
16-20
18
21-25
5
26-30
1
No, there is not a concentration of frequencies in the middle.
Yes, there is not symmetry.
No, the frequencies increase, reach a maximum, then decrease.
O o
Yes, the frequencies are roughly symmetrical around the maximum.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

step-by-step explanation: it is d

160 cm

step-by-step explanation:

you have to add all the sides together