If f(x)=5x+40,what is f(x) when x= -5?

Step-by-step explanation:

Step 1:  Set x to -5

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1