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monitta
3 years ago
12

This week in school, there is a 75 percent probability of having a fire drill, a 50 percent probability of a tornado drill,

Mathematics
1 answer:
vova2212 [387]3 years ago
8 0

Answer: A (edg2020)

     

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#1.---60%   #2.---$12.60 per hour

Step-by-step explanation:

#1. Since It was originally $50 you have 50% already, so what I did was I multiplied 50 by 2. this got me 100 which is a simpler way to calculate by. 50 to 80 dollars is a $30 change, so multiply that by 2 and you get 60. 60 will be your percent of change. You can double check this by multiplying 50 by .60, the answer will be 30 and 50+30=80

#2 Since Tyler starts off with $12 per hour with a 5% increase you will need to multiply 12*.05 this will get you the answer of 0.6 you then need to add $12, since that was his original payment. 12+0.6=12.60, so his final payment would by $12.60 per hour

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The rate of change is 70 which means that it grew by $70 every year.

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