Practice Plus Use the graphs off and g to solve Exercises 81-88. Y y = f(x) 12 = g (x) 81. Find (f + g)(-3). 83. Find (fg)(2). 85. Find the domain off + g. 87. Graph f + g. 82. Find (g - f)(-2). 84. Find ( g 1(3). 86. Find the domain of I g 88. Graph f - g.

its totaly b

your welcome btw

df =

both have same length

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.

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hope this