You can make an inequality out of this: 20≥2x+10
Brianna's thinking is wrong because obviously all of the expressions are going to equal -4 when x is 0 because -4 would be the only value. Also, if x was a different number, the expressions wouldn't be equivalent. The equivalent expressions are A. 9x - 3x - 4, and C. 5x + x - 4. This is because when both are simplified, they equal 6x - 4.
Answer:
Davis will need <u>26 cups</u> of dry food to feed his mice for one year.
Step-by-step explanation:
Given:
David has two pet mice. Together , the mice eat 1/2 cup of dry food pellets every week.
Now, to find the quantity of dry food Davis need to feed his mice for one year.
<u>In 1 year there are 52 weeks.</u>
So, as the unit rate of dry food for the mice to eat per week is 
Now, to get the quantity of food mice need to be feed in 52 weeks, we multiply 52 by
cup:

<em><u>So, in 1 year mice will need to be feed 26 cups of dry food.</u></em>
Therefore, Davis will need 26 cups of dry food to feed his mice for one year.
He pays $450 in taxes.
Since the first $10,000 of the assessed value is exempt, we subtract $10,000 from the $25,000 assessed:
25000-10000=15000
Now we need to see how many $100-increments are in 15000. We do this by dividing:
15000/100 = 150
Each of these raises the taxes by $3:
150(3) = 450
Answer:
63/80 and 7/4 * 9/20
Step-by-step explanation:
7/8 * 9/10 = 63/80
7/4 * 9/20