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Andrej [43]
3 years ago
10

Grant is a member of a book club. He pays a $10 yearly membership fee and can purchase books through the club for $2.75 each. Hi

s total annual cost is a function of the number of books, b, that he purchases in a year: C(b) = 2.75b + 10   What is the total cost if he purchases 13 books in a year?
Mathematics
2 answers:
Arisa [49]3 years ago
7 0
$45.75 because you take the 2.75 and times it by how may books which is 13 and you get $35.75 then you add your $10 and it will give you $45.75
OLEGan [10]3 years ago
6 0
2.75b+10 (write the equation)
2.75(13)+10 (substitute for b)
35.75+10 (multiply)
45.75
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Start by making the denominators of both fraction the same. This can be done by multiplying one fraction's denominator by the other.

After simplifying and combining the two fractions together, check if the numerator can be factorised such that there is a common factor in the denominator and numerator. In this case, the numerator cannot be factorised.

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