Answer:
96km^3
Step-by-step explanation:
Answer:
1875
Step-by-step explanation:
375x5=
1875
20x 5 i hope this helps you!
Solution:
Let x represent a number of calling minutes. According to the problem, we want:

now, putting the similar terms together, we obtain:

this is equivalent to:

now, solving for x, we get:

then, the correct answer for the first question is:
400 minutes is the number of minutes the two plans cost the same
now, for the second question, we can replace the above value (400 minutes) into the following equation:

so that, the correct answer for the second question is:
$55 is the cost when the two plans cost the same
<h3>
Answer:</h3>
<em>consider </em><em>D </em><em>for </em><em>a </em><em>second</em><em>. </em><em>(</em><em>a</em><em> </em><em>+</em><em> </em><em>b</em><em>)</em><em> </em><em>×</em><em> </em><em>would</em><em> </em><em>give </em><em>you </em><em>(</em><em>2</em><em>×</em><em>-</em><em>4</em><em>)</em><em> </em><em>+</em><em> </em><em>(</em><em>×</em><em> </em><em>+</em><em> </em><em>2</em><em>)</em><em> </em><em>=</em><em> </em><em>3</em><em>×</em><em>-</em><em>2</em><em> </em><em>which </em><em>is </em><em>not </em><em>a </em><em>quadratic </em>