Question

Given f(x)=10-2^x, find f(7)

Answer 1

Explanation:

f(x)=10-2^x,

f(7) = 10 - 2^7 but : 2^7 = 128

so : f(7) = 10 - 128 = - 118

Answer 2

f(7) = 10 - 2^7
f(7) = 10 - 128
f(7) = -118