allicat133
26.07.2019 •
Mathematics
1. what is the sum of p and q? p(x) = 3x – 11 q(x) = 4 – 4x a) (p + q)(x) = –x – 7 b) (p + q)(x) = –x + 15 c) (p + q)(x) = 7x – 7 d) (p + q)(x) = 7x + 15 2. what is the difference of t and v? t(x) = 7x – 2 v(x) = x – 9 a) (t – v)(x) = –6x – 11 b) (t – v)(x) = –6x – 7 c) (t – v)(x) = 6x + 7 d) (t – v)(x) = 6x – 11 3. nina makes and sells necklaces. for n necklaces, her revenue function is r(n) = 11.75n and her cost function is c(n) = 8.9 + 1.2n. which function is nina’s profit function? a) p(n) = 10.55n – 8.9 b) p(n) = 12.95n – 8.9 c) p(n) = 12.95n + 8.9 d) p(n) = 14.1n + 8.9
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Ответ:
p(x) = 3x – 11 q(x) = 4 – 4x
3x - 11 + 4 - 4x
= -x - 7
answer
a) (p + q)(x) = –x – 7
2. What is the difference of t and v?
t(x) = 7x – 2 v(x) = x – 9
7x - 2 - x + 9
= 6x +7
answer
c) (t – v)(x) = 6x + 7
3. Nina makes and sells necklaces. For n necklaces, her revenue function is r(n) = 11.75n and her cost function is c(n) = 8.9 + 1.2n.
Which function is Nina’s profit function?
profit = revenue - cost
= 11.75n - 8.9 - 1.2n
= 10.55n - 8.9
answer
a) p(n) = 10.55n – 8.9
Ответ:
8/2 is the equivalent to
8 divided by 2
8 divided by 2 equals 4