Economics
Biology
Chemistry
Sociology
100

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

100

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

100

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

100

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

200

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 

200

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) 

200

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

200

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

300

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. 

300

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

300

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

300

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

400

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

400

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

400

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

400

Solve the system of equation 

2x + 3.5y =21

4y = -4x +13

(-6.4, 9.6)