The price of a video game increases by 20%, then decreases by 10%. If the final price is $46.98,
what was the original price?

The original price was $43.50

Step-by-step explanation:

Let

x ----> the original price of a video game

we know that

1) The price of a video game increases by 20%

so

The final price is equal to the original price multiplied by 1.20

so

2) The price of a video game decreases by 10%

so

The final price is equal to the price at this moment multiplied by 0.90

so

we have that

solve for x

the answer is 489

step-by-step explanation:

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.