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Bezzdna [24]
3 years ago
13

Find f(–2) for f(x) = 3 • 2x

Mathematics
2 answers:
masha68 [24]3 years ago
5 0

Answer: f(-2)= -12

Step-by-step explanation:

f(-2)= 3*2(-2)

f(-2)= 3*(-4)

f(-2)= -12

Sati [7]3 years ago
4 0

Answer:

actually its 2 over 9 ...aka 2/9

Step-by-step explanation:

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Consider the cubic function f(x) = x^3 + ax^2 + bx + 4 where (a) and (b) are constants. When f(x) is divided by x-3, the remaind
Debora [2.8K]

Answer:

see explanation

Step-by-step explanation:

Using the Remainder theorem

If f(x) is divided by (x - h) then f(h) = remainder, thus

f(3) = 3³ + a(3)² + b(3) + 4 = 10, that is

27 + 9a + 3b + 4 = 10

9a + 3b + 31 = 10 ( subtract 31 from both sides )

9a + 3b = - 21 → (1)

f(- 1) = (- 1)³ + a(- 1)² + b(- 1) + 4 = 6, that is

- 1 + a - b + 4 = 6

a - b + 3 = 6 ( subtract 3 from both sides )

a - b = 3 → (2)

Rearrange (2) expressing a in terms of b

a = 3 + b → (3)

Substitute a = 3 + b into (1)

9(3 + b) + 3b = - 21 ← distribute and simplify left side

27 + 9b + 3b = - 21

12b + 27 = - 21 ( subtract 27 from both sides )

12b = - 48 ( divide both sides by 12 )

b = - 4

Substitute b = - 4 into (3)

a = 3 - 4 = - 1

Hence a = - 1 and b = - 4

8 0
3 years ago
What is the solution to the system of equations<br><br> y=2x-3.5<br><br> x-2y=-14
PIT_PIT [208]
Y-2x=-3.5
x-2y=-14
then multiply the first term by 2
2y-4x=-7
x-2y=-14
then sum them
-3x=-21
x=-7
y=3.5
5 0
3 years ago
the admission fee to an amusement park is $27.it cost an additional p dollars to rent a locker to hold your belongings. the tota
Mademuasel [1]

$6.00 for one person to rent a locker.

6 0
3 years ago
One bag of chips serves about 5 people. If you want to have a picnic with 18 people, how many whole bags of chips should you get
ira [324]

Answer:

4 bags

Step-by-step explanation:

3 bags would only cover 15 people so the next lowest amount is 4 bags.

7 0
3 years ago
Read 2 more answers
Which of the following tables represents a function?
kirza4 [7]
<h3>Answer:  Choice B</h3>

Reason:

Choices A, C and D have repeated x values. It allows us to rule them out.

Table A has x = 6 repeating. Table C has x = 3 and x = -3 repeated. Table D has x = 4 and x = 5 show up twice each.

Whenever we have repeated x values, it indicates we do <u>not</u> have a function. A function is only possible when each x value goes to exactly one y value only.

Table A has the input x = 6 lead to y = 2 and y = -2 at the same time. Table C and table D are a similar story. So this is another way to rule out choices A, C and D.

Luckily table B has no repeated x values. Each x input leads to exactly one and only one y output. Therefore, <u>table B</u> is a function.

Side Note: the y values can repeat, but the function won't be one-to-one.

6 0
2 years ago
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