Identify the class boundaries. Age (yr) when award was won Frequency
15 to 19 31
20 to 24 32
25 to 29 16
30 to 34 2
35 to 39 4
40 to 44 2
45 to 49 1

.

step-by-step explanation:

quit

step-by-step explanation:

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²