Which formula can be used to describe the sequence? f(x + 1) = –2f(x)
f(x + 1) = Negative one-halff(x)
f(x + 1) = One-halff(x)
f(x + 1) = 2f(x)

Step-by-step explanation:

what sequence ? we can't see it. so, there is no way to tell which answer is right.

nice answer

Step-by-step explanation:

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)