Choose all of the following equivalent exponential function(s) to f(x)=(5/2)^−x f(x)= -(5/2)^-x
f(x)= -(2/5)^x
f(x)= x^-2/5
f(x)= (5/2)^x
f(x)= (2/5)^x
f(x)= 2^-x/5

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

idk

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.