Please help I only have a short amount of time to get my grades up I’m struggling

The price of one gram of gold decreased by $1.25 from the beginning of week 1 to week 4.

Step-by-step explanation:

From the given chart;

The change in price between week 0 and week 1;

ΔP₁ = P₁ - P₀

1.5 = P₁ + 0

P₁ = 1.5

The change in price between week 1 and week 2;

ΔP₂ = P₂ - P₁

-3.375 = P₂ - 1.5

P₂ = -3.375 + 1.5

P₂ = -1.875

The change in price between week 2 and week 3;

ΔP₃ = P₃ - P₂

0.625 = P₃ - (-1.875)

0.625 = P₃ + 1.875

P₃ = 0.625 - 1.875

P₃ = -1.25

The change in price between week 3 and week 4;

ΔP₄ = P₄ - P₃

1.5 = P₄ - (-1.25)

1.5 = P₄ + 1.25

P₄ = 1.5 - 1.25

P₄ = 0.25

The change in price of one gold from the beginning of week 1 to end of week 4;

ΔP = P₄ - P₁

ΔP = 0.25 - 1.5

ΔP = -1.25

Thus, the price of one gram of gold decreased by $1.25 from the beginning of week 1 to week 4.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.