With each of them saving $17 a week for 3 weeks, they will be able to save up $153 after three weeks. Adding this amount to the original amount they had will give them $467. Obviously, they will not have enough money to buy the gift they want for their mother. They will be short of $48.
27:343 because since the side lengths are like cm or in, it's always to the power of 1, but it is invisible, so since you want to know the ratio of the volume, volume is always inches cubed or centimeters cubed etc. So you get the original ratio of the side lengths to the first power, and do each number to the third power which gives you that ratio.
13x - 7
You get this answer by adding the two together because mWEV is equivalent to the two known angles put together.
Hope this helps!
