Sorry ppl... T^T but I need help.

Answer:

y1=   -5

y2=   -1

y3=    5

y4=    9

Step-by-step explanation:

Answer:

y1= 2(0) – 5

= –5

y2= 2(2) – 5

= –1

y3= 2(5)–5

= 5

y4= 2(7) – 5

=9

What input and output have to be removed to make the relation a function?:
{(–9, –8), (–8, 4), (0, –2), (4, 8), (0, 8), (1, 2)}

(0,8)
(4,8)
(1,2)
(-9,-8)

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Hey Guys... I need help...
A local restaurant caters buffets for large parties in its banquet room. The cost of a buffet is $1,000 before tax and tip. The meal is subject to a 7% food tax. Party hosts are required to leave an 18% tip, based on the pre-tax amount. How much will the final bill be?
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And, Make a Explanation to this:
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The elevation of city A is 60 ft above sea level; the elevation of city C is 12 ft above sea level. The elevation of city D is 1/2 of the elevation of city C.
Part A: Write an expression to represent the elevation in ft of city D.

Part B: Solve the expression and explain why the answer is negative or positive.

Pls help me and answer correctly!! I'll give brainliest to the best!!!

EDITED QUESTION ... answer it >:]

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Would you solve the equation 0.25x + 7 = 1/3x − 8

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HELP ASAP WILL MARK AS BRAINLLEST
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Which of the following expressions are equivalent to -5+7-(-3).
( Choice A)
A
−5+7+3

(Choice B)
B
-5+7-3−5+7−3 minus, 5, plus, 7, minus, 3

(Choice C)
C
-5-(7-3)

(Choice D)
D
-(5-7-3)

(Choice E)
E
-(5+7)+3