Well first, we have to find the y intercept. So plug in your coordinates.
-2 = 4 (3) + b
Simplify
-2 = 12 + b
now, let's put like terms together.
-14 = b
b= -14
Hope I could help!
Number 2 is 700+.15x <=750
number 3 is [(87 + 85 +81 +90+78+x)/6]>=85
Put -10 where x is and do the arithmetic.
g(x) = x² + x
g(-10) = (-10)² + (-10) = 100 - 10 = 90 . . . . . . corresponds to selection D
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If you like, you can factor the expression to make evaluation easier.
g(x) = x(x +1)
g(-10) = (-10)(-9) = 90
How more feet is the outer perimeter of the walkway than the perimeter of the pool is 48 ft
Since 6ft is the width of walkaway
Hence:
Let increase in width be 12
Let increase in length be 12
Now let determine How many
more feet is the outer perimeter of the walkway than the perimeter of the pool
Outer perimeter Number of feets = 2×(12+12)
Outer perimeter Number of feets = 2×24
Outer perimeter Number of feets = 48 ft
Inconclusion How more feet is the outer perimeter of the walkway than the perimeter of the pool is 48 ft
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