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
Answer: in decimal form, 3/5=0.6 and 6/11=0.54. From this, we can tell that 3/5 is greater than 6/11. I believe this is what you mean by compare them, this is comparing their values.
Answer:
1 5/9 OR 14/9
Step-by-step explanation:
First we need to find out what the question is asking. How much sugar will she need if she wants to make 2 1/3 batches?
Next, we must see if we need to divide, subtract, multiply, or add. We need to divide.
2 1/3 divided by 1 1/2
Convert mixed numbers to improper fractions: 2 1/3=7/3 1 1/3=3/2
Apply the fraction rule a/b/c/d=a*d/b*c: 7*2/3*3
14/9 OR 1 5/9
Answer:
Plan A every two hours and Plan B every hour
Step-by-step explanation:
Plan A 3 hours Friday and 9 hours Saturday - total of 12 hours and he worked a total of 6 hours. 12/6=2
Plan B 5 hours Friday and 7 hours on Saturday - with a total of 12 hours and he worked 12 hours. 12/12=1
2 is C and 3 is 24...................................