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harina [27]
2 years ago
11

Help please!

Mathematics
1 answer:
Alina [70]2 years ago
7 0

Step-by-step explanation:

Given

f(x) = 8x - 9

Then

For a.

f(3y - 1 ) = 8(3y - 1 ) - 9

= 24y - 8 - 9

= 24y - 17

Now for b.

f(x) = - 23

or, 8x - 9 = - 23

8x = - 23 + 9

8x = - 14

x = - 14 / 8

x = - 7 / 4

Hope it will help :)

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In a sample of students, 125 said they exercise on a regular basis. How large was the sample if 27.3% said they exercised on a r
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3 years ago
4 of 4
Vlada [557]

Answer:

£30

Step-by-step explanation:

Let Brian initially had money in his wallet = £x

and Colin had the money = £y

Since ratio of money in Brian's wallet to Colin's wallet was 5 : 1

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i hope this helps

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3 years ago
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