# math

the function b(x)=2 x-5 determines how many bags of dog food needs to be purchased for an animal shelter, where x is the number of dogs at the shelter. the shelter manager uses m(b(x)) to find the amount of money to bring for the dog food purchase. the function m(x)=3x+1. solve for how much money to bring here there are 10 dogs in the shelter? Help!

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1. first find bx by substituting in 10 for x in the equation for the number of dogs. so... bx=2(10) - 5 = 15. we need 15 bags of dog food. now substitute in 15 for x in the m(x) equation 3(15)+1= 46. \$46 to purchase 15 bags of dog food for 10 dogs.
hope this helps.

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posted by Karen

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