Question

the temperature of a metal increase from 4 degree C to T degree C which is related by the equation T=4(1X2)^x when it was heated for x second.
find:
A_ the temperature of the metal when it is heated for 9 seconds.
B_ the time taken, in second, need to raise the temperature from 5 dgree C to 20 degree C

Answer 1

Emm, ehat do you mean by (1X2) ?

Answer 2

It state 1.2
the point is at the center

Answer 3

If it's:\[T=4(1*2)^x\]The basic formula would be:\[T_f=T_i*2^x\]Where Tf and Ti are the final and initial temperatures respectively and x is the time in seconds.

Assuming that's correct...

Part A:\[T_f=4*2^9=?\]
Part B:\[20=5*2^x=?\]Just solve for x in that one.