Which relation is a function? {(3, 2), (4, 5), (6, 8), (7,5)}
B. {(3, 2), (4, 5), (7,-3), (7, -2)}
C. {(1, 4), (2, 5), (4, 7), (1, 9)}
D. {(2, 3), (5, 4), (2, -3), (0, -1)}

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130