Hey if anyone can answer my previous questions for more points that would be great, here’s the thing for 50 points. Unfortunately, trolls answered it but their answer is gone now so cheers and god bless

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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?