By what percent is the change in price if: the price was $250 and now is $100

60 percent decrease

Change in price = new - old = 100 - 250 = -150

The negative change means the price has gone down

Divide this change in price over the original 250 and convert to percent form

(change in price)/(original price) = -150/250 = -0.60

which converts to -60%

The negative percent change in price indicates a price decrease

So the price goes down by 60% meaning that it lost 60% of its value

Note how 60% of 250 is 0.60*250 = 150 which was the change in price computed earlier.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.