(25pt and brainliest) from 1970 to 1990, the consumer price index (cpi) increased from 38.8 to 130.7. if a jar of grape jelly cost $0.25 in 1970 and the price of grape jelly increased at the same rate as the cpi from 1970 to 1990, approximately how much did a jar of grape jelly cost in 1990? a. $0.59 b. $0.84 c. $1.31 d. $0.39

Option B. $0.84

Step-by-step explanation:

As we know the formula of Consumer Price Index.

Here is Current price of the the product.

P = Price of the product in the base year

Now we will plug in the values for year 1970

------------(1)

Similarly for the year 1990.

 ---------(2)

Now we will divide equation 2 from 1.

Therefore, The price of a jar of grape jelly would be $0.84 in 1990.

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides