Step-by-step explanation:
a.) All real numbers x greater than 2
===> X > 2
b.) 6 more than a number k is less than or equal to 12
===> 6+k =< 12
Answer: It is worth it.
Step-by-step explanation:
If a customer sends 101 - 200 texts in a month, they get charged 8 cents per text.
If they send 201 - 300, they get charged 6 cents per month.
If you have sent 200 texts, your charge for the month will therefore be:
= 200 * 8
= $16.00
If you send the 201th text, you will be charged 6 cents per text. Total charge would be:
= 201 * 6
= $12.06
<em>If you send 1 more text, it will be worth it because you will save:</em>
<em>= 16 - 12.06</em>
<em>= $3.94</em>
Estimate A: 95
Actual:~90.625
estimate B: 39
Actual:~42.083
Answer: There are 500 ninth grade students at Richbartville high school.
Step-by-step explanation:
Let be "x" the number of ninth grade students that are at Richbartville high school.
You know that the number of ninth grade students take algebra is 450 and this amount represents the 90% of the the ninth grade students at Richbartville high school.
Knowing this, you can set up the following proportion:
The final step is to solve for "x" in order to find its value. This is:
Therefore, there are 500 ninth grade students at Richbartville high school.