So for one 3.25x5= 16.25 then 16.25x2 = 32.50. So 40 dollars will be enough
It's a linear function. The graph is a straight line, therefore we need only two points.
Select any value of x and calculate the value of y:
y = -3x + 4
for x = 0 → y = -3(0) + 4 = 4 → (0, 4)
for x = 2 → y = -3(2) + 4 = -2 → (2, -2)
Divide 7% into $240 dollars and hat should get you your answer.
hope this helps!