Responda essas 4 contas com o calculo que dou 5 estrelas e marco como melhor resposta (Pfv é pra esse fim de semana) (- 4/3) : ( - ½) =
( -4,0) : ( 1/5) =
( ¾) . (3/4 ) + ( ( 2/3) . (2/3) . (2/3) ) = -2
( 3/8) = -4c) (2) = -2d) ( -2/3) =
Estou preso nessas 4 e eu seria muito grato se alguem puder me ajudar obrigado :)

they charge the same amount at 20 minutes.

step-by-step explanation:

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

um is there supposed to be a picture?