Economics
The price of a stock is represented by the function
where x is the number of days past January 1st.
f = 26x +40
The price of oil is represented by the function
where x is the number of days past January 1st.
f= 20x + 160
After how many days does the price of the stock pass the price of oil?
20 days
The population of Eagles is represented by the equation
E = 2x-4
The population of Rattle Snakes is represented by the equation
R = -4x+8
How many years are need before the Eagles would be eat the entire population of the rattle snake?
2 years
An acid is mixed with a base to create a neutralized compound.
The expression for the strength of the acid is represent by the number of positive hydrogen ions (H+).
Acid = 35x + 2
The expression for the strength of a base is represented by the number of hydroxide ions (OH-)
Base = 30x +12
x represents the volume of solution in milliliters (ml). how many ml of TOTAL solution is needed to create a neutralized compound?4ml
Abby is opening 2 online blogs
Her first blog(A) earns revenue at a rate of
A = .0001v +5
Her second blog(B) earns revenue at a rate of
B = .00005v + 5.5
if v represents the number of views, how many views are needed for her blogs A,B to earn the same amount?
10000
A clothing Manufacturer(Fly Jacks) designs jackets at a price of $32 dollars per jacket and a delivery fee of $15
A clothing Manufacturer (Fresh Sleeve) designs jackets at a price of $35 and does not have a delivery fee.
At what number of jackets is it worth it to switch from (Fresh Sleeve) to (Fly Jack) to save money?
After 5 jackets
P + Q = 1
If the Heterozygous frequency (P) is (1/3)
What value of the Homozygous Allele Frequency is needed for the population to be in Hardy-Weinberg equilibrium Equilibrium?
(2/3)
Rochelle is conduction an experiment on cells of Elodea. To induce plasmolysis at the correct rate, she needs to manufacture an 8% saline solution, but she only has 2 stock solutions in her lab.
Solution A= 10% Saline
Solution B = 5% Saline
How much of solution A and solution B is needed to manufacture the desired 8% saline.
x = .533
The birth ratio of boys: girls is
1.06:1
If the number of boys is currently 50 million, how many girls are there in the population?
About 47 Million
Bugs Bunny is repainting his house. He can buy Brand A paint and a paint roller tray, or Brand B paint and a a painting grid.
Paint A = $27/ gallon
Paint Roller = $3
Paint B = $25/ gallon
Paint Grid = $5
After how many gallons is the cost for BB to paint his house the exact Same?
1 gallon, that's all folks.
Genotype Frequencies can be represented by
p^2 + 2pq + q^2 = 1
If the frequency of the genotype p is (1/2), what an expression for the value of q ?
q^2 + 1/4 q -3/4 = 0
If you dilute 300. mL of a 4.00 M solution of CuCl to 900. mL, what is the new concentration of the solution?
1.33 M CuCl
The number of users of the iPhone has the following sequence since the year 2005 in millions
14, 18, 22, 26, 30 ...
The number of users of the Android has the following sequence since the year 2005 in millions
52, 54, 56, 58 ...
After how many years will the users be equal?
20 years
The Federal Reserve wants to lower inflation by raising interest rates on lending U.S. Dollars.
The equilibrium for the inflation rate is the coordinate
(3.5, 8)
Which of the following is a system of equations that represents the equilibrium point?
A) y=6
y = 2x+1
B) y=8
y = 4x+1
C) y=8
y = 2x+1
D) y=4
y = 6x+1
C) y=8
y = 2x+1
A cancer cell's radius grows at the rate of
g = .375t + 20
A pharmaceutical drug named Dactinomycin will lower the size of the cancer cell by .5t . How many days will it take for the cancer to go away?
160 days
Daily Double:
You mix 35.0 mL of 0.100 M NaCl(aq with 25.0 mL of 0.200 M AgNO3 (aq). What are the concentrations of these substances after mixing and before any reaction occurs?
Hint:
M1V1 = M2V2
and
M2 = (M1 V1 ) / Vtotal
M1 = (M2 V2 ) / Vtotal
M1 = .0583 M NaCl
M2 = .0833 M Ag NO3
Solve the system of equation
2x + 3.5y =21
4y = -4x +13
(-6.4, 9.6)