Exponential Growth
& Decay
Half-Life
a=
r=
t=
y=
y=
a=
Complete each of the following exponential growth questions.
1. The population of a small town in North Carolina is 4,000 and
is growing at a rate of 3% per year. What will the population
of the town
1.1 10. a) 5 12. a) 4 32. 46,789 b) 7 b) 7
1.2 6. 9 + 7 = 16 and 7 + 9 = 16 Commutative Property of Addition: The order of two numbers around an addition sign does not affect the sum. 8. 5 + 0 = 5 Additive Identity Property: the sum of 0 and any whole num
6.1 58 a) 9% =
9% =
0.09
c) 6% =
6% =
= 0.06
6.2 34) = 1.5 = 150%
6.3 12) R% = 75% B = what number (the unknown) A = 150 18) B = 750 A = 75 R% = what percent (the unknown)
6.4 46)
6.5 B = 325 100 B= = 5,000
So, 325 is 6.5% of 5,000 50) Rate is rounded to
Math115 Discussion Questions Week 1 DQ 1 My opinion is that if you're good at math you'll like it. So, liking depends more on abilities with some exceptions of course. Also we were taught math would be one of the subjects a person benefits the most in his
Week 1
DQ 1 An expression is a description of a mathematical object (some class or set). For example, 9 would be an expression describing 9 sets. An equation is an assertion (whether right or wrong) that one expression refers to the same class as another.
MATH 116 WEEK 2-4-6-8 CONCEPT CHECKPOINTS
Week 2 Concept check
1) The system have ALL REAL SOLUTIONS, when the final step you got TRUE statement like this: 2x+3y =6 4x+6y =12 Solve this system. What is the solution of the system? We see if I times 2 both