Enrique está ahorrando dinero para comprar una calculadora gráfica hasta el momento ha ahorrado $30 su maestro de matemáticas le dijo que ha ahorrado el 40% de lo que necesita cuál es el precio de la calculadora

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

answer: i think one of the answer is $150 and $300?

step-by-step explanation: