OK, the relation. (2,9), (2,8), (-3,7) (-3,6)
Since 2 maps to two values, as does -3, this relation is not a function.
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By the way these points, in this slightly different order,
(2,9), (2,8), (-3,7) (-3,6)
are the vertices of a parallelogram.
Let be Z the money ;
We have ( 40 / 100 ) x Z = $85 ;
( 4 / 10 ) x Z = $85 ;
( 2 / 5 ) x Z = $85 ;
Z = $( 85 x 5 ) ÷ 3 ;
Z = $425 ÷ 3 ;
Z = $141,66 ≈ $142 ;
The mode of his grade is 90 because it is the number most frequented
Answer: 13)74
14)53
Step-by-step explanation: