3)
f(x) =(x+1)/4
so
f(6a) = (6a+1) / 4
f(6a) =3/2(a) + 1/4
8)
f(x) =(x+1)/4 = 0
x + 1 =0
x = -1
answer
x = -1 makes f(x) = 0
9)
(x+1)/4 >= 10
x + 1 >= 40
x >= 39
Answer
Domain is any number greater or equal 39 (x >= 39)
Easy
just remember
you can do ANYTHING to an equaiton as long as you do it to both sides
try to get place holder by itself
4.5b+9=90
minus 90 from both sides
4.5b+9-9=90-9
4.5b+0=81
4.5b=81
either divide both sides by 4.5 or double 4.5 to get rid of the decimal
I will double
double both sides
9b=162
divid both sides by 9
b=18
A. (3,1) because if you put 3 as x, 3-2=1,which then equals 1 as y
Study hard and take the test slowly. rushing will make you get all the wuestions wrong. if you need more advice, message me.
15r means that she burns 15 calories per min, for as many mins as she ran. EG: if she ran for 10 min, then she burned 150 cals. The other one I'm not so sure.
