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2 years ago

(3a) You spend $72 on tapes and CDs. Each tape costs $8 and each CD costs $12.

Mathematics

1 answer:

Makovka662 [10]2 years ago

6 0

Answer:

3a. 8t + 12c = 72

3b. t + c = 7

Step-by-step explanation:

number of tapes is t

number of Cds is c

so 8t + 12c = 72

and t + c = 7

so t = 7 - c

replace t = 7 - c in to the first equation

8(7 - c) + 12c = 72

56 - 8c + 12c = 72

4c = 72 - 56 = 16

c = 4

if c = 4, then t = 7 - c = 7 - 4 = 3

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Finger [1]

The range of the function is $\{-19,-4,16\}$

Explanation:

The function is $f(n)=5n-4$

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We need to find the range of the function.

The range can be determined by substituting the values of domain in the function.

Thus, the range of the function when the domain is -3 is given by

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Thus, the range is -19 when $n=-3$

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Arranging the range in order from least to greatest is given by

$\{-19,-4,16\}$

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3 years ago

Is the function even, odd or neither?<br> y=x^2-2x-8

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If you take the -x substitution from the last step and then multiply it by -1, you'd have:

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2 years ago

Read 2 more answers

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Leokris [45]

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