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

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

Find the slope of the line passing through a pair of points