12+30>6x-4x
42>2x
42/2>x
21>x
Answer:
40 marks was the pass marks of the subject.
Step-by-step explanation:
32.8 + 7.2 = 40 marks { basic addition theory based }
1) oct.
2) sept.
4) aug. &' sept
Not 100% though .
Answer: Attached.
Step-by-step explanation:
Either solve the equations directly, or graph them and look for the point of intersection.

Actually Welcome to the concept of expo functions.
f(x) = -8(2)^x - 12 ,
for f(0) ,here substitute x = 0
so we get as ,
==> f(0) = -8(2)^0 -12
==> f(0) = -8-12
==> f(0) = -20
hence, f(0) = -20