Needing Major Help With Algebra 2?

Posted on 2014-04-14 11:00:00 in Statistics by JASMINE JONES

Well I'm stuck on these few problems I already tried to look up online how to solve it but I'm not getting anywhere and yes I know I need a tutor but honestly I can't afford one but Thanks in Advance

1.Find the x intercept's and y intercept for each parabola. Write your answers in the (x,y) form. Round if necessary to the nearest hundredth.

* y=xsquared(meaning 2)-6x-7 x-int:__,__ y-int:__

* y=(x+2)(x-1) x-int:___,___ y-int:___



2. For each Parabola A :State the direction the parabola opens: Up or Down

B: Find the vertex: state if its maximum or minimum

y=3(x-2)squared(meaning2)

A _____

B V=(__,__) _____



3. For each Ellipse find the Requested Info

(x-1)squared/16+(y+3)/9=1

* The \ means its a fraction I don't know how to do that sign on my phone lol

Center (__,___)

Vertices Major Axis

(___,___) (___,___)

Vertices Minor Axis

(___,___) (___,___)





4. If the original graph is y=2x how is it shifted if the equation is changed to y=2x+3???



5. If the original graph is y=Xsquared how is the graph shifted if the equation is changed to y=(x-2)squared???



6. Find the values of the composite functions below given the following functions.

f(x)=2x-7 and g(x)=(x+4)squared

A (f • g)(3)=

B (g•f)(3)=

* The dot is supposed to be a small open circle but I don't have that on my keyboard



7. What values of x must be excluded from the domain of f(x)=1/x-5 ??

Extended Values _______ Why ____



8. What values of x must be excluded from the domain of f(x)=square root of x

Extended Values _______ Why _____



9.Find the inverse of f(x)=3x-1

Rewrite f(x) as an equation for y _____

Switch x and y _____



10. A rocket is launched in the air from the ground and is 100 ft in the air after 1 second and is 280 ft in the air after 2 seconds. Which of the following is the quadratic function that models it height h(t) after t seconds???



A-h(t) =60tsquared+40t

B-h(t)=40tsquared+60t

C-h(t)=60tsquared-40t

D-h(t)=40tsquared-60t



11.Which of the following shows the correct exponential form for : log5 25=2

A- 2squared5=25

B-5squared2=25

C-25and1/2=5

D-25squared-2=5



12. Which of the following shows this exponential equation in logarithmic form

10squared-3=1/1000

A-log-31/1000=10

B-In1/1000=-3

C-log1/1000=-3

D-log1/100010=-3



13.Jorge wants to save money for the future by investing 1,000 in an account at an interest rate of 4%. How many years will it take for the account to reach 1,800 if he does not add more money and only interest is added? Round your answer to the nearest hundredth.

Equation info

A=P(1+r)t

P=amount of money invested

r= interest rate percentage in decimal form

t=time in years

A=total money in the account at the time t

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