Answer: 2
Step-by-step explanation: five times 2 is 10 plus 10 would equal 20
Let a,b,c,d and e are five numbers
mean = (a +b+ c+ d+e)/5 = 30
⇒ (a +b+ c+ d+e) = 150_______(1)
now, Let the number excluded be a
then, new mean = (b+ c+ d+e)/4 = 28
⇒ (b+ c+ d+e)= 112
putting this value in (1),
⇒a + 112 = 150
⇒a = 150 -112 = 38
excluded number = 38
Answer:
B-16
Step-by-step explanation:
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f(x)=20+300x
Also, Rex should find a different pool because that fee is ridiculous.
