Answer:
87q-6
sorry if i am incorrect.
Step-by-step explanation:

This is an exact answer. the answer will be a bit larger than 20
Answer:
c Aerobics and jumping rope
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Yes
For f(x) to represent a function each value of x from the domain must only map to one unique value in the range, called one-to-one
This is the case here as each value of x maps to one unique value in the range
domain x ∈ {- 5, - 4, 0, 3 }
range y ∈ {0, 2, 10, 16 }
P(7) = 
There are 8 possible outcomes from the spinner and only one 7, hence
P(7) = 