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nevsk [136]
3 years ago
7

Which of the following expressions is the inverse of the function y = 3x + 4?

Mathematics
2 answers:
Delvig [45]3 years ago
6 0
 y = (x - 4)/3

So the answer is C ;D<span>
</span>
Inga [223]3 years ago
5 0
The correct answer is d.
Interchange values of x and y in the equation y= 3x+4
So we get x=3y+4
or x-4=3y
y = (x-4)/3
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A merchant bought some shirts for $120. The next day the price charged for each shirt was reduced by $1. The merchant calculated
Goshia [24]

Answer:

The merchant buys 30 shirts originally.

Step-by-step explanation:

Let us assume that the merchant bought x numbers of shirts in $120.

So, the cost for each shirt is $\frac{120}{x}.

Now, if the cost for each shirt is reduced by 1$, then he would have bought 10 shirts more i.e. (x + 10) shirts in $120.

So, we can write the following equation as  

(\frac{120}{x} - 1)(x + 10) = 120

⇒(120 - x)(x + 10) = 120x

⇒ 120x - 10x + 1200 - x² = 120x

⇒ x² +10x - 1200 = 0

⇒ x² + 40x - 30x - 1200 = 0

⇒(x + 40)(x - 30) = 0

⇒ x = - 40 or x = 30

But x can not be negative.

Hence, the merchant buys 30 shirts originally. (Answer)

6 0
3 years ago
Can someone help me please, thanks.
mars1129 [50]

Answer: 2.19 pounds

Step-by-step explanation:

35 / 16 is 2.1875, if you round that you get 2.19

6 0
3 years ago
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Which statements about the graph of the function f(x) = -x - 4x + 2 are true? Select three options.
stich3 [128]

Answer:

The option "The function has a positive y-intercept" is true because f(0) = 2, which is the y-intercept.

Step-by-step explanation:

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3 years ago
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Three miles a day should be the correct answer
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8 0
3 years ago
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