The cost of 25 pounds of bird seed is $44.50. What is the cost for one pound of bird seed
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Answer:
The competition can be played in 7 different ways
Step-by-step explanation:
First game : X
Second game : Y
Third game : Y
After that either X or Y can win
<h3>¹Case - 1: Y wins the fourth game:</h3>The competition ends with Y winning as he/she won 3 games in a row
<h3>Case - 2: X wins the fourth game:</h3>more games are required to decide the winner
<h3>Sub-case - a: X wins the fifth game:</h3>more games are required to decide the winner
<h3>²Sub-sub-case - i: X wins the sixth game:</h3>The competition ends with X winning as he/she won 3 games in a row
<h3>³⁻⁴Sub-sub-case - ii: Y wins the sixth game:</h3>The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.
<h3>Sub-case - b: Y wins the fifth game:</h3>more games are required to decide the winner
<h3>⁵Sub-sub-case - i: Y wins the sixth game:</h3>The competition ends with Y winning as he/she won 4 games in total
<h3>⁶⁻⁷Sub-sub-case - ii: X wins the sixth game:</h3>The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.
∴<u>The competition can be played in 7 different ways</u>
Let x- intercept represents time
Let y-intercept represents population
Let 1990 represent initial year
Points are (0,14.2)(10,12.4)
slope m=
=
General linear equation
y= mx+b --------------(i)
here m is slope and b is intercept
plug the 1st point in equation
14.2= -0.018(0) + b
b=14.2
y= 0.018x + 14.2
replace y with p(t) and x with t
p(t) = -0.018t + 14.2