Annie has $12 in her bank account. after making 4 equal transactions, she ended up with $42.80. how much did she deduct from her account with one transaction ?

Kate is arranging new furniture in her rectangular sitting room. she has mapped the arrangement on a coordinate pane. a,b and c represent the sofas, v1 and v2 are decorative vases and aq the aquarium. find the distance between v1 and the aquarium. any body you