James completed 18 math problems, This is 30% of the problems he has to do. How many math problems must he do?

60

Step-by-step explanation:

percentage=18

rate=30%

base=

p/r=b

18/0.30=60

60

Step-by-step explanation:

18=30%

6=10%

6x10=60

10x10=100%

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:

3; 9 is 8 to -4

step-by-step explanation: