(8x+4)+(18-8x)=<u>8x</u>+4+18-<u>8x</u>=0+22=22
the choice is D
Answer:
y = 100 2^h
Step-by-step explanation:
The formula for growth is given by
y = ab^x
where a is the initial value and b is the growth rate
a = 100
b = 2 since we are doubling
x is the amount of time = h
y = 100 2^h
Answer:
1. The price decreases with increasing age
2. Decreases
Step-by-step explanation:
Refer to the graph.
Answer:
A. principal interviewed the 25 students who scored highest on a reading test.
D. For a report on the exercise habits of adults, Sergio talked to 30 adults at a local fitness center.
E. Josh asked the first 25 people he met at the dog park if they preferred dogs or cats.
Step-by-step explanation:
Biased means if the selection of every unit does not have an equal chance of being selected in a sample.
The sample is said to be good if choosing the unit is unbiased. The sample is said to be unbiased if the selection of each unit is independent.
Option A is an example of data selected in a biased way because principal chose only those student who scored the highest marks on reading test.
Options B and C are unbiased as here a selection of each number and name of the student has an equal chance of being selected.
Option D is biased because Sergio talked adults at a local fitness center where people go for maintaining their health. So, there is a chance of the selection of fitted adults more than unfitted adults.
Option E is biased because Josh met people at the dog park where dog lovers are more than a cat lover.
28 factors: 1,2,4,7,14,28
70 factors: 1,2,5,7,10,14,35,70
GCF : 14
