Reference no: EM132303073
Assignment Questions -
Q1. Simplify the following. Express each answer with positive exponents.
a. (w4(w-3))/(w-2)-1
b. √(25m-12)/√(36m10)
c. (((x3y)-1(x4y3))/(x2y-3)-2)-1
Q2. An insect colony, with an initial population of 20, quadruples every day.
a. Complete the table.
Day
|
Population
|
First Differences
|
Second Differences
|
0
|
20
|
|
|
1
|
80
|
|
|
2
|
|
|
|
3
|
|
|
|
4
|
|
|
|
5
|
|
|
|
b. Write an equation of the form y = a ⋅ bx to model the data.
c. Graph the data.
d. Is this an example of exponential growth or decay? Explain your answer.
Q3. Solve the following exponential equations.
a. 3x+4 = 27
b. 54x+2 = 25x-1
c. 63x-7 = 1/6
d. 2x+2 - 2x = 48
Q4. For the function f(x) = -3 ⋅ 2x-1 - 5:
a. State the equation of the horizontal asymptote.
b. State the mapping rule for the transformed function.
c. Sketch a graph of the transformed function.
d. State the domain and range of the transformed function.
Q5. Tungsten-187 is a radioactive isotope that has a half-life of 1 day. Suppose you start with a 100-mg sample. How much is left after 5 days?
Q6. The half-life of carbon-14 is 5730 years. How long does it take for a 120 gram sample to decay to 1.875 grams?