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Algebra 11 Online
OpenStudy (mic123):

sepciality t-shirts are being sold online for $30 each plus a one-time handling fee of $2.75. the total cost is a function of the number of t-shirts bought. what function rule models the cost of the t-shirts? evaluate the function for 5 t-shirts. A) 30t+2.75; $43.75 B) 2.75t+30; $43.75 C) 2.75t+30; $152.75 D) 30t+2.75; $152.75

rebeccaxhawaii (rebeccaxhawaii):

okay so it would be 30x because x represents the number of shirts. so each shirt would be 30 times x which is the number of shirts

rebeccaxhawaii (rebeccaxhawaii):

follow me so far?

OpenStudy (mic123):

mhm

rebeccaxhawaii (rebeccaxhawaii):

when what is 2.75?

OpenStudy (mic123):

what do u mean?

rebeccaxhawaii (rebeccaxhawaii):

$2.75 is the one time fee. so what will we do with it?

OpenStudy (mic123):

subtract it?

rebeccaxhawaii (rebeccaxhawaii):

pretend you are the buyer. you visit my site and if says you need to pay $2.75 to become a member then if you want to buy a shirt that will be 30 dollars each .. would you subtract the fee or ?...

OpenStudy (mic123):

subtract 30?

rebeccaxhawaii (rebeccaxhawaii):

no

rebeccaxhawaii (rebeccaxhawaii):

read what i said again and analyze remember you are tryna figure out the overall cost that you are paying. if you subtract 30 that means that they are paying for it for you.. which they arent

OpenStudy (mic123):

oh you add

rebeccaxhawaii (rebeccaxhawaii):

yes exactly so back to your equation would you add or subtract?

OpenStudy (mic123):

add

rebeccaxhawaii (rebeccaxhawaii):

should it be 2.75t+30 or 30t+2.75?

OpenStudy (mic123):

30t+2.75?

rebeccaxhawaii (rebeccaxhawaii):

YESSSS good job

rebeccaxhawaii (rebeccaxhawaii):

now we are solving for 5 shirts

rebeccaxhawaii (rebeccaxhawaii):

how would you do that remember t is the number of shirts

OpenStudy (mic123):

add2.75 to 5?

rebeccaxhawaii (rebeccaxhawaii):

to buy 5 shirts it will be $5? so each shirt is $1?

OpenStudy (mic123):

no

OpenStudy (mic123):

do you add 2.75 5 times then?

rebeccaxhawaii (rebeccaxhawaii):

so t represents the number of shirts and you are buying 5 shirts.. so plug 5 into the equation to replace t

OpenStudy (mic123):

30 times 5?

rebeccaxhawaii (rebeccaxhawaii):

whats the equation

OpenStudy (mic123):

30t+2.75

rebeccaxhawaii (rebeccaxhawaii):

okay t=5 so replace t with 5

OpenStudy (mic123):

it wont work 30 times 5 is 150

rebeccaxhawaii (rebeccaxhawaii):

you are missing part of the equation

OpenStudy (mic123):

what part?

rebeccaxhawaii (rebeccaxhawaii):

write me the whole equation

OpenStudy (mic123):

30t+2.75

rebeccaxhawaii (rebeccaxhawaii):

replace 5 with t and keep ALL the equation

OpenStudy (mic123):

30(5)+2.75

rebeccaxhawaii (rebeccaxhawaii):

okay now solve

OpenStudy (mic123):

150+2.75= 425

rebeccaxhawaii (rebeccaxhawaii):

do that math again

OpenStudy (mic123):

152.75?

rebeccaxhawaii (rebeccaxhawaii):

you got it :))))) good job

OpenStudy (mic123):

lol thanks so much for having patcieince with me

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