Answer:
She needs 153
Step-by-step explanation:
Let x be the score in the 4th game
To find the average add up the scores and divide by the number of scores added
(149+162+152+x) /4 = 154
Multiply each side by 4
(149+162+152+x) /4 *4= 154*4
(149+162+152+x) = 616
Combine like terms
x+463=616
Subtract 463 from each side
x+463-463 = 616-465
x = 153
Most fool-proof way to do this in my opinion is to simply expand everything and write it out, i.e.

Throwing this into a calculator, we get
23.032To the nearest cent, this gives us
$23.03
Answer:
Company A is cheaper in the beginning, but company B is cheaper the more songs you buy.
Step-by-step explanation:
Company A: 1 song -1.25 5 songs- 6.25 100 songs- 125. 1000 songs- 1,125
Company B: 1 song- 4.65 5 songs- 8.25 100 songs- 70 1000 songs-700
-m-4=-13
-m=-13+4=-9
m=9
☺☺☺☺
Answer:
You will need to calculate the area of the circle on top of the pillar. Then, times it by ten. It then will be the whole volume of the pillar. Then, you compare to see if the pillars have the same volume.