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2 years ago

3. Which of the following is an exponential function?

Mathematics

1 answer:

lukranit [14]2 years ago

4 0

Answer:

B is correct I hope this helps.

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The bill at the restaurant last night was $25.50 before tax. Sales tax was 6% of the bill. You also left a tip of 10% of the bil

Feliz [49]

Answer:

The answer is $29.73

Step-by-step explanation:

6% tax= $1.53

1.53+25.50=27.03

10%= $2.70

2.70+27.03= 29.73

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3 years ago

I need help with number 7.

Anastaziya [24]

Well what grade are you in cause I’m also learning some of this stuff, I actually learned it before at t(e beginning of the year

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3 years ago

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NARA [144]

Answer:

I'll bring Sam here

Step-by-step explanation:

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3 years ago

3. Maria is a veterinarian. She wants to know how the weight of a puppy is related to its length. To find out, Maria randomly se

sweet [91]

Answer:

Part A. I chose points (7,1.3) and (48,9.8)

Part B. a. Positive correlation; b. y = 0.21x - 0.2

Step-by-step explanation:

Part A.

I chose the first and last points on the line — (7 in, 1.3 lb) and (48 in, 9.8 lb).

That put three points on the line, three above it, and four below.

Part B

a. Type of correlation

There is a positive correlation between the length of a puppy and its weight.

You would expect a longer dog to be bigger and weigh more than a shorter dog.

b. The equation for the line of best fit

The slope-intercept equation for a straight line is

y = mx + b

where m is the slope of the line and b is the y-intercept.

The line passes through the points (7,1.3) and (48, 9.8).

(i) Calculate the slope of the line

\begin{array}{rcl}

$m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = & \dfrac{9.8 - 1.3}{48-9}\\\\& = & \dfrac{8.5}{41}\\\\& = & \textbf{0.21 lb/in}\\\\\end{array}$

The slope of the line is 0.21 lb/in.

(ii) Locate the y-intercept

Put the slope and the coordinates of one point into the slope-intercept formula.

$\begin{array}{rcl}y & = & mx + b\\1.3 & = & 0.21\times7 + b\\1.3 & = & 1.47 + b\\b & = & -0.2\\\end{array}$

The y-intercept is at (0,-0.2)

(iii) Write the equation for the line

y = 0.21x - 0.2

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3 years ago

I need help I dont know how to do it<br>

Ganezh [65]

Answer:

I put the answers in the picture below!

Step-by-step explanation:

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3 years ago