Apack of gum costs 50 cents. that is 4 cents less than four times what the pack cost 15 years ago. write an equation that could be used to find the cost of the gum 15 years ago. then solve and find the price of gum 15 years ago. show all the work. thx.

Let the price of the gum 15 years ago was = x cents

Now it is given that the current price of the gum is = 50 cents

And the question says

That is 4 cents less than four times what the pack cost 15 years ago

So the equations comes out to be ,

4x -4 = 50

Now we have to solve for x

add 4 to both sides

4x = 54

Divide both sides by 4

x=13.5

Hence 15 years ago , the cost of the gum was 13.5 cents

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!