Help plz 1) __ × 4 = -20
2) __-7 = - 2
3) __ × - 5= 20
4) __- 9 = - 2
5) __+ 17 = 20​

Kelly is three years younger than her sister. the sum of their ages is 34 years. how old is kelly and how old is her sister?

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x