Answer:
y = 0.35x + 18.99
X=21
Step-by-step explanation:
3x+5+6x-14=180
9x-9=180
9x=180+9
9x=189
x=21
The deviation of the set of data is 678
you solve it like an equation.
4x+20<40
4x<20
x<5
so the answer would be anything less than 5, which is A