Sandy has earned $290. That is 20% of the cost of the new computer she wants to buy. What is the total amount of money she needs to buy the computer? A. $1160
B. $1740
C. $1450
D. $58

1450

Step-by-step explanation:

If it is 20% just multiply it by five

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: