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svetlana [45]
3 years ago
14

Explain this to me please.

Mathematics
1 answer:
Margarita [4]3 years ago
7 0

Answer:

f(x + 3) = x² + 3x - 2

General Formulas and Concepts:

  • Order of Operations: BPEMDAS
  • Expand by FOIL (First Outside Inside Last)

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = x² - 3x - 2

f(x + 3) is x = x + 3

<u>Step 2: Find</u>

  1. Substitute:                              f(x + 3) = (x + 3)² - 3(x + 3) - 2
  2. Expand by FOILing:               f(x + 3) = x² + 6x + 9 - 3(x + 3) - 2
  3. Distribute 3:                            f(x + 3) = x² + 6x + 9 - 3x - 9 - 2
  4. Combine like terms:               f(x + 3) = x² + 3x - 2
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KiRa [710]
11.5/100 (320)
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4 years ago
A gas station customer pumps exactly six gallons
ki77a [65]

Answer:

Please find attached the graph of the relationship between the gallons, g, and cost, C

The relationship between the cost and number of gallons is cost C = $3.25 × Number of gallons, g

Step-by-step explanation:

The given parameters are;

Number of Gallons, g           {}               Cost, C

6           {}                                                 $19.50                               {}                  

22                                                          $71.50

From the given coordinates, we generate the graph using Microsoft Excel, as seen in the attached graph

The given coordinates can be used to find the equation of the relationship in point and slope form as follows;

The slope of the the given coordinates are (71.5 - 19.5)/(22 - 6) = 3.25

The equation of the graph in point and slope form is C - 71.5 = 3.25·(g - 22)

C - 71.5 = 3.25·(g - 22)

C = 3.25·g - 3.25 × 22 + 71.5 = 3.25·g - 0

C = 3.25·g

The relationship between the cost and number of gallons is cost C = $3.25 × Number of gallons, g

From the above equation, we have, that the price per gallon is $3.25

7 0
3 years ago
If p:q=1:2 and q:r=4:3,find p:q:r​
vazorg [7]

Answer:

2:4:3

Step-by-step explanation:

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u><u> </u>

  • p : q : r .

<u>Solution</u><u> </u><u>:</u><u>-</u><u> </u>

By question ,

→ p :q= 1:2

→ q : r = 4 :3

Therefore ,

→ p/q × q/r = 1/2 × 4/3

→ p/r = 2/3

Again ,

→ p = 1/2q

→ r = 3/4 q

Henceforth ,

→ p : q : r

→ 1/2 q : q : 3/4q

→ 4/2q : 4q : 12/4 q

→ 2 : 4 : 3

6 0
3 years ago
Solve each system by elimination <br> -9x -4y=2<br> 7x +4y = -6
zloy xaker [14]

Answer:

cộng vế theo vế ta đc :

-2x=-4<=>x=2

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6 0
3 years ago
What are the domain and range of the relation given in the table?
qaws [65]

Answer:

C

Step-by-step explanation:

all x values is domain, all y values are range

7 0
3 years ago
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