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liraira [26]
3 years ago
10

which of the following equation represents a linear function a. f(x) =6x-3 b. f(x) = 7x(x+1) c.f(x) = x2+3x2 d. f(x) = x2(x-3​

Mathematics
1 answer:
marissa [1.9K]3 years ago
5 0

Answer:

a

Step-by-step explanation:

b, c, d are all x2 (a real linear equation does not have square or it will become Quadratic equation )

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PLEASE HELP QUICK 100 POINTS
MrRissso [65]

Answer:

Change per week: $20

Starting amount of money: $550

Step-by-step explanation:

<u>Given equation</u>:

y=550+20x

where:

  • x = number of weeks
  • y = total account balance

<u>Change per week</u>

As the variable x represents the number of weeks, its coefficient represents the change per week in the amount of money.

Therefore, the change per week in the amount of money in the account is $20.

<u>Initial Balance</u>

The starting amount of money in the account (initial balance) will be the value of y when x = 0:

\implies y=550+20(0)=550

Therefore, the starting amount of money in the account is $550.

4 0
1 year ago
Given f(x)=-2x-1, solve for x when f(x)=-7
Svetlanka [38]

Answer:

The answer is -15.

Step-by-step explanation:

1. 2x - 1

2. 2(-7) - 1

3. (-14) - 1

4. -15

By plugging in our x value, we are able to use PEMDAS to  multiply 2 and the value of x and then, we subtract 1 from the value we got from step 3 to get -15.

5 0
2 years ago
Which number line represents the solutions to –2|x| = –6? A number line from negative 8 to 8 in increments of 1. Two points, one
Elenna [48]

|–2x| = -6

=> 2x = 6  

=> x = 3 

and,

=> 2x = -6

=> x = -3.

Two points, one at negative 3 and one at 3.

8 0
3 years ago
Read 2 more answers
Caroline drove 350 miles to her grandmother’s house. The trip took her 5 1/4 hours. What was her average speed in miles per hour
Shalnov [3]
64 hours per hour average
350 miles ÷5.25 hours in which it took= 63.63 rounded is 64 mph average
7 0
3 years ago
Read 2 more answers
Can you please help me?!
Nezavi [6.7K]

Answer:

d) x=5

Go to station 10

Step-by-step explanation:

-\left(1+7x\right)-6\left(-7-x\right)=36

Expand:

-1-7x+42+6x=36

-x+41=36

Subtract 41 from both sides:

-x+41-41=36-41

-x=-5

Divide both sides by -1:

\frac{-x}{-1}=\frac{-5}{-1}

x=5

3 0
3 years ago
Read 2 more answers
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