Estude a variação do sinal das seguintes funções do 1º grau: a)f(x)=-3x
b)f(x)=2-3x
c)f(x)=2x+5
d)f(x)=-3x+6
e)f(x)=1-5x

Pfv eu preciso urgente de ajuda

Through: (-3,-3) parallel to y= 7/3x+3

Can someone me i’m confused. will give brainliest and a whole bunch of points

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.