B. y = 7x
7x is the steady rate of 7 gallons per minute. The number of minutes can also be plugged into x to find the volume of the pool after x minutes.
Answer:
( 2x + 1 ) (x + 1 )
Step-by-step explanation:
2x² + 7x + 3
m+n = b = <u>7</u>
m · n = a · c = 2 · 3 = <u>6</u>
m = 6
n = 1 because 6 + 1 = <u>7</u> and 6 · 1 = <u>6</u>
2x² + <u>1</u>x + <u>6</u>x + 3
x ( 2x + 1 ) + 3 ( x + 1 )
( 2x + 1 ) (x + 1 )
The interval notation is { 5/ 2 < x > 0 }
<h3>How to determine the value</h3>
Given the inequalities;
To determine the value of x, we have;
2x - 1 < 4
collect like terms
2x < 4 + 1
2x < 5
Make 'x' the subject
x < 5/ 2
−5x −3 > −3
collect like terms
-5x > -3 + 3
-5x > 0
x > 0
Thus, the interval notation is { 5/ 2 < x > 0 }
Learn more about interval notation here:
brainly.com/question/26025356
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Answer:
7 number ans is b because 2 times the sum of a and b means 2×(a+b)