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andrew11 [14]
3 years ago
9

Please help with these three math questions!!!! I really need it

Mathematics
2 answers:
nikdorinn [45]3 years ago
4 0
1. is 9
and the other ones i dont really know

BARSIC [14]3 years ago
3 0
2.  replace the x by 2  and work it out 
= 7(2) - 5

3.  that cost $7.50 each  and $0.25 is taken off the cost of  any number you perchasse

so it 0.75n - 0.25

4.  Hint  the  second  (y) values are obtained from the first (x) values by multiplying  by 2
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jen thought of a number. she called her number k. she subtracted 34 from her number, multiplied the result by 9, and she got 72.
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k - 34 = 8
k = 8 + 34
k = 42
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2 years ago
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olchik [2.2K]

Answer:

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2 years ago
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5 0
3 years ago
What the vertex of the graph of y=-x^2
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