Hi, i need with these questions!

8. factor 54a+24b.

(that's all it says, if you need the multiple choice answers, ill comment them)

9. which of the following expressions is equivalent to 6(5+3x)?

(if you need multiple choice answers ill comment)

(01.04 mc) an ice sculpture is melting because of heat. assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours?

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?