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alexandr402 [8]
2 years ago
5

Find the value of f(3) given f(x) = − 5x + 2​

Mathematics
2 answers:
Verdich [7]2 years ago
6 0

Answer:

- 13

Step-by-step explanation:

Plug 3 in for x:

-5(3)+2

Simplify :

-15+2

=-13

Ksju [112]2 years ago
3 0

Answer:

-13

Step-by-step explanation:

f(x) = -5x + 2

f(3) = -5(3) + 2

f(3) = -15 + 2

f(3) = -13

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Ralph Chase plans to sell a piece of property for $155000. He
Mrrafil [7]

Ralph chase invested $85000 at an interest of 10% and $70000 at an interest of 8%

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.

Let a represent the amount invested at interest of 10% and b represent the amount invested at 8%, hence:

a + b = 155000    (1)

Also:

0.1a + 0.08b = 14100    (2)

From both equations:

a = 85000, b = 70000

Ralph chase invested $85000 at an interest of 10% and $70000 at an interest of 8%

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7 0
2 years ago
What is x&gt;8,x&lt;0 written in interval notation?
vazorg [7]

Answer:

(-∞, 0) U (8, ∞)

Step-by-step explanation:

8 0
3 years ago
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Removing which point from the coordinate plane would make the graph a function of X?
lisabon 2012 [21]
You would need to remove (-2, 1)
8 0
3 years ago
Need help please, I dont
aivan3 [116]

Answer:

The last answer

Step-by-step explanation:

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2 years ago
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Linda is 12 years younger than her sister Laura. Together their total age is 18. How old is Linda? How old is Laura?
geniusboy [140]

Answer:

Linda: 3 ; Laura: 15

Step-by-step explanation:

Note that Linda + Laura's age is 18, and that Linda is 12 years younger than her sister.

Let "Linda" = x , "Laura" = y:

x + y = 18

x = y - 12

First, plug in y - 12 for x in the first equation:

(y - 12) + y = 18

Simplify.

2y - 12 = 18

Isolate the variable (y). Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First add, then divide.

2y - 12 (+12) = 18 (+12)

2y = 18 + 12

2y = 30

(2y)/2 = (30)/2

y = 30/2

y = 15

Next, plug in 15 for y in the second equation (the other equation would work too).

x = y - 12

x = (15) - 12

x = 3

Linda's age is 3, Laura's age is 15.

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7 0
3 years ago
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