PLS HELP ASAP JUST TELL ME WHAT TO PUT IN THE BOX LOL

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?