Answer: B
Step-by-step explanation:
A<span>. What proportion have SAT scores greater than 700? Z= 2 ; 2.28%
B. What proportion have SAT scores greater than 500? 50%
C. What is the minimum SAT score needed to be in the highest
10% of the population? Z= 1.28; 628
D. If the state college only accepts students from the top 60% of the SAT distribution, what is the minimum SAT score needed to be accepted? Z= .26; 474</span><span>
</span>
You do 37,000×.08=2,960
then 2,960×4=11,840
Y=4x+12
y=-2(x+2)2+2=>y=-4x-4+2=-4x-2=>
y=-4x+2
Use the elimination property:
2y=14
y=7
Put y value back to the first equation: 7=4x+12, solve for x and -5=4xso x=-5/4
(-5/4,7)
