Answer:
h = 10 + 8y
Step-by-step explanation:
Given that :
Height of ght if all alien at birth = 10cm
Growth rate per year = 8 cm
Let:
y = number of years since birth
h = alien's height in centimeter
Relationship between h and y
h = Initial height + (growth rate per year*number of years)
h = 10 + 8y
The equation to find Amy's earning after tutoring for 15 hours is 300 dollars.
<h3>How to find an equation?</h3>
She earn 20 dollars for each hours she tutors.
E = earnings in dollars
H = hours of tutoring
The equation relating E and H are as follows:
E = 20H
Therefore, the equation to find Amy's earning after tutoring for 15 hours is as follows;
E = 20H
E = 20 × 15
E = 300 dollars
Therefore, Amy's tutoring for 15 hours is 300 dollars.
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Answer:
Each person runs 3 miles in a relay race.
Step-by-step explanation:
Given:
Distance of Relay race m = 12 miles.
The expression m divided by 4 is the distance each person runs in a relay race that is m miles.
Each person runs in relay race = 
Now given the total distance of the relay race is 12 miles.
i.e. value of m = 12 miles
Now substituting the value of m in above equation we get;
Each person runs in relay race = 
Hence each person runs 3 miles in a relay race.
To solve this question simply break down the variables and numbers one at a time.
Here the word a number can be used to describe any number so let’s call that a variable x.
Increased would be addition in mathematics.
Next put everything together.
5x + 6 = -2
5x = -8
X = -8/5.
This is the value of x