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Otrada [13]
3 years ago
11

Find the value of x so that the function has the given value. f(x) = 6x + 9; f(x) = 21

Mathematics
1 answer:
Olin [163]3 years ago
3 0

Answer:

x = 2

Step-by-step explanation:

We need to find the value of x so that the value of given function becomes 21 .

We have ,

f(x)=21\\\\ f(x)= 6x + 9

Now , for finding x ,

6x +9 = 21 \\\\ 6x = 21 -9 \\\\ 6x = 12 \\\\ x = 2

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Playland Park charges $25 admission plus $2 per ride. Funland Park charges $35 admission plus $1 per ride. For what number of ri
Ket [755]

Answer:

10 rides

Step-by-step explanation:

Make an equation.

25 + 2x = 35 + 1x

Subract 1x from the 2x to get 1.

New Equation: 25 + 1x = 35

Subtract 25 from 35 to get 10.

New Equation: 1x = 10

Divide 1 from both sides.

Answer: 10 rides

8 0
3 years ago
If f(x)=2x-5, which expression represents f(x+1)? A) 2x-3, B) 2x-4, C)2x-5, D)2x+7
Dovator [93]
F(x)=x^2+2x+1 & g(x)=3(x+1)^2
now, f(x)+g(x)
=x^2+2x+1+3(x+1)^2
=x^2+2x+1+3(x^2+2x+1)
=x^2+2x+1+3x^2+6x+3
=4x^2+8x+4<===answer(c)
next:
f(x)=x^2-1 & g(x)=x+3
now, f(g(x))=(x+3)^ -1
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=x^2+6x+8<====answer(b)
i solve two of ur problems.
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5 0
3 years ago
A store sold a case of scented candles for $17.85 that had been marked up 110%. What was the original price?
rusak2 [61]
1.1x=17.85
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5 0
3 years ago
Read 2 more answers
82.24 = -8.48 + 4x<br> Need help
Vinvika [58]

Answer:

x = 22.68

Step-by-step explanation:

82.24 = -8.48 + 4x

82.24 + 8.48 = 4x

4x = 90.72

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4 0
3 years ago
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What to do when a negative number is subtracted from a positive number?
pentagon [3]
When you see the subtraction<span> (</span>minus<span>) sign followed by a </span>negative<span> sign, turn the two signs into a plus sign. Thus, instead of </span>subtracting<span> a </span>negative<span>, you're adding a </span>positive<span>, so you have a simple addition problem.</span>
5 0
3 years ago
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