SAT I maths egzamino uzdavinys

Paprastas, bet reikia paaiskinimo del vienos vietos.

The projected sales volume of a video game cartridge is given by the function [tex]s(p)=\frac{3000}{2p+a}[/tex]
where s is the number of cartridges sold, in thousands; p is the price per cartridge, in dollars; and a is a constant. If according to the projections, 100,000 cartridges are sold at $10 per cartridge, how many cartridges will be sold at $20 per cartridge?

Angliskai nesuprantu, kai aiskina, kad s=100, tada isistatom 100 vietoje p, gaunasi a=10. Atsakymas gaunasi 60. Bet kadangi s duota tukstanciais, tai bus 60,000. Tai kodel reikia rasytis, kad vis tik a yra 100, o ne 100,000? Tada kasnors paaiskintu kas tas 100 yra isvis?

Šiek tiek pasikeisk sąlygą ir taps lengviau:
The projected sales volume of a video game cartridge is given by the function [tex]s(p)=\frac{3000000}{2p+a}[/tex]
where s is the number of cartridges sold   (not in thousands ;])   ; p is the price per cartridge, in dollars; and a is a constant. If according to the projections, 100,000 cartridges are sold at $10 per cartridge, how many cartridges will be sold at $20 per cartridge?

Gal SAT egzaminus laikysi?

VaLDaSSGal SAT egzaminus laikysi?

Milk

VaLDaSSGal SAT egzaminus laikysi?

Na, laikysiu SAT.
O SAT subject testus nemanau. Bet jei laikyciau SAT subject testa, rinkciausi fizika.

Bet man vis tiek nelabai aiski ta salyga uzdavinio.

almostlow

Milk

VaLDaSSGal SAT egzaminus laikysi?

Na, laikysiu SAT.
O SAT subject testus nemanau. Bet jei laikyciau SAT subject testa, rinkciausi fizika.

Bet man vis tiek nelabai aiski ta salyga uzdavinio.

O kur tie egzaminai reikalingi? Stosi i uzsieny?

Milk

almostlow

Milk
Na, laikysiu SAT.
O SAT subject testus nemanau. Bet jei laikyciau SAT subject testa, rinkciausi fizika.

Bet man vis tiek nelabai aiski ta salyga uzdavinio.

O kur tie egzaminai reikalingi? Stosi i uzsieny?

Jie reikalingi JAV.

[video]http://www.youtube.com/watch?v=kIfOjkB17BA[/video]

puodžius[video]http://www.youtube.com/watch?v=kIfOjkB17BA[/video]

Turiu dar viena uzdavini is SAT.


In the xy-plane above, the graph of the function f is a line, and the graph of the function g is a parabola. The graphs of f and g intersect at (0;0) and (3;3). For which of the following values of a is g(a)-f(a)<0?

(A) 0
(B) 2
(C) 4
(D) 5
(E) 6

Visiskai niekas neaisku. Ko cia isvis praso, nuo ko pradeti, kas cia yra, ir ka cia skaiciuoti. Gal kasnors pades? Atsakymas B.