30x - 40 + 12 = 572 Will upvote

What is the equation of the line, first written in point-slope form and then written in slope-intercept form?

Alika [10]

Point Slope:
y-12=-3(x-6)

From there you can find the slope intercept form:

y-12=-3x+18
y=-3x+30

4 0

3 years ago

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The graph shows the cost per day for renting a car. Which statement is true

lukranit [14]

Where's the graph..?

6 0

4 years ago

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Ashley brought 7/8 gallon of lemonade to the party.

Misha Larkins [42]

7/8 - 2/3 = 5/24 is the correct answer of the question 

3 0

4 years ago

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Find the missing number

Monica [59]

Answer:

1.3

2.-1

3.1

4.25

5.17

Step-by-step explanation:

maybe i messed up but pretty sure this is it

6 0

3 years ago

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In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.

babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

(b) How many bacteria would be found in 2 days

(c) How long for 1000 bacteria to be found

Answer:

(a) 282429536481 bacteria

(b) $7.97*10^{22$ bacteria

(c) 6 days

Step-by-step explanation:

The question illustrates an exponential function

$y = ab^x$

Where

$a = Initial\ Value = 1$

$b=Rate = 3$ --- i.e. triples

$x = number\ of\ hours$

Solving (a): Bacteria in 24 hours

In this case:

$x = 24$

Substitute $x = 24$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{24$

$y = 1 * 282429536481$

$y = 282429536481$ bacteria

Solving (b): Bacteria in 2 days

$2\ days =48\ hours$

So:

$x = 48$

Substitute $x = 48$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{48$

$y =7.97*10^{22$ bacteria

Solving (c): How long for 1000 bacteria

In this case:

$y = 1000$

Substitute $y = 1000$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$1000 = 1 *3^x$

$1000 = 3^x$

Take Log of both sides

$Log1000 = Log3^x$

This gives:

$Log1000 = xLog3$

Make x the subject

$x = \frac{Log1000}{Log3}$

$x \approx 6$

Hence: It takes 6 days

8 0

3 years ago