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1.d 2.b 3.false 4.true

12/5=2.4  so 2.40dollars=unit rate   12dollars/5cds=2.40/1cd=unit rate   since it cost 2.40 dollars for 1cd, then 2.40 dollars X 9cds=21.60 dollars for 9cds ;)

Are you looking for confidence interval?  i will assume so    its usually 95 percent C.I which means Z of 1.96    mean + or _(Z)  std/square root of the population(n)   280.90 +(1.96)123.70/sq root of 32 280-(1.96)123.70/sq root of 32   sq...

intra = within, and inter = between   answer is intraspecific competition because purple loosestrife is a kind of wetland plant and intraspecific is competition WITHIN same species whereas interspecific is competition BETWEEN different species

It stated that a slave (Dred Scott) who had resided in a free state and territory (where slavery was prohibited) was not thereby entitled to his freedom, that African Americans were not and could never be citizens of the United States. A

4x^5 y^3    when you divide powers, you subtract(so x^6-X1)=x^5 y^9/y^6=y^3 and when you multiply powers, you add them

slope here is 2 but slope of perpendicular line is 1/2 s0 y=mx+b  y=6 x=4 m=1/2       y=mx+b so solve for b   b=4   soy=1/2x+4  A

that means there are 672 freshmans in total and 1/16 of them(42) are in math first hour of the day

In order for an area to have a climax community it has to be undisturbed which would make it stable   climax community is the final stage and primary succession is first so its less diverse

first divide everything by 5 y= -2x now to graph, start at zero then go down two over 1... then repeat ;)

n + (n + 1)=329 2n+1=329 n=164   therefore n+1=165   164+165=329

She would have to drive 55mph 1mph=8miles xmph=440   440=8x x=55mph

x = first even integer x + 2 = second even integer  x + x + 2 = 138 2x+2 =138 x=68   x+2=70 68+70=138

4 is the y- intercept.... so go up 4 on the y- axis. 0.5 is the slope... u go .5 up and 1 over

1. Very simple...answer 1250   (15000 - 11250)/3yrs 2. about 4395 in 1998     (in 22 years population increased by 2060, so we can expect population to increase half as much in 11 years(1030) therefore in 5.5 years an increase of 515) in 6 years about 540-550estimation,...

1.mutualism 2.Lichens are first to appear in an area during Primary Succession