Answer:
all are functions
Step-by-step explanation:
a function is when each x has a y
a relation is when 1 x has more than 1 y which makes it invalid therefore not a function
16.4 % of 129
16.4/100 × 129 = 21.2
21.2 pounds is made up of fat
X=30
y=kx
6=10k
k=0.6
y=0.6x
18=0.6x
X=18/0.6
x=30
not -7 just 7
x=1/3