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lora16 [44]
3 years ago
10

Ruth bought 7 cases of soda for a picnic. Each case cost $3.50. What total amount did Ruth spend for the soda?

Mathematics
2 answers:
Naya [18.7K]3 years ago
4 0

Answer:

24.50

Step-by-step explanation:

3.50

<u>x    7</u>

24.50

Karolina [17]3 years ago
4 0

Answer:

24.50

Step-by-step explanation:

7 x 3 =21.00 0.50 x 7 = 3.50 21.00 + 3.50 =24.50

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Suppose that the functions q and r are defined as follows.
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Answer:

(r o g)(2) = 4

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Step-by-step explanation:

Given

g(x) = x^2 + 5

r(x) = \sqrt{x + 7}

Solving (a): (r o q)(2)

In function:

(r o g)(x) = r(g(x))

So, first we calculate g(2)

g(x) = x^2 + 5

g(2) = 2^2 + 5

g(2) = 4 + 5

g(2) = 9

Next, we calculate r(g(2))

Substitute 9 for g(2)in r(g(2))

r(q(2)) = r(9)

This gives:

r(x) = \sqrt{x + 7}

r(9) = \sqrt{9 +7{

r(9) = \sqrt{16}{

r(9) = 4

Hence:

(r o g)(2) = 4

Solving (b): (q o r)(2)

So, first we calculate r(2)

r(x) = \sqrt{x + 7}

r(2) = \sqrt{2 + 7}

r(2) = \sqrt{9}

r(2) = 3

Next, we calculate g(r(2))

Substitute 3 for r(2)in g(r(2))

g(r(2)) = g(3)

g(x) = x^2 + 5

g(3) = 3^2 + 5

g(3) = 9 + 5

g(3) = 14

Hence:

(q o r)(2) = 14

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