Answer:
-6
Step-by-step explanation:
f(x)= (3- 4)(3+3)
=( -1 )(6)
= -6
Answer:
440
Step-by-step explanation:
multiple of 220
220, 440
multiple of 88
88, 176, 264, 352, 440
X = 2
y = -9
16 - negative 18 = -2
Answer:
C 315
Step-by-step explanation:
(12 + 30) * 15/2 = 315
Answer:
a)
, b)
, c)
, d) 
Step-by-step explanation:
a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

b) The general solution is found after separating variables and integrating each sides:

Where
is the time constant and 
c) The time constant is:


The particular solution of the differential equation is:

d) The amount of radium after 300 years is:
