Lalo has 1,500 minutes per month on his cell phone plan. how many more minutes can he use if he has already talked for 785 minutes in an inequality? explain.

All you have to do is subtract 1500-785 in order to find the number of minutes left for him.

1500-785=715 more minutes left

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

answer: 193

explanation:

200-7 = 193