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Mathematics, 22.11.2019 00:31 maybaby7545
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1. ronald is making hats and scarves for charity. he has enough yarn to make 5 hats and 8 scarves. it takes him 12 hours to knit a hat and 6 hours to knit a scarf; he has 20 hours to knit.
let x represent the number of hats made. let y represent the number of scarves made.
which inequalities are among the constraints for this situation?
select each correct answer.
a) y≤8
b) 12x+6y≤20
c) x≤5
d) 5x+8y≤20
e) x+y≤20
2. which ordered pairs lie on the graph of the exponential function f(x)=2^(x+4) −8?
select each correct answer.
a) (−2,−4)
b) (2, 56)
c) (8, 0)
d) (24, 1)
3. the expression 15.85(1+x) gives the total cost of a toy, where x is the sales tax written in decimal form.
what does 1 + x represent in the expression?
a) percent of original price being paid in tax
b) cost of toy
c) percent of tax
d) amount of tax
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Answers: 3
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