Q and A for the topic: General

-4.048/8.8

Use cubic regression to find a function that fits these points: (1,-1) (3,-13) (3,-45) (-1,11) ?xto3 + ?xto2 + ?x + ?

In a market, the number of people buying product A is 18, the number of people buying product B is 20. If the number of people buying product A and B is 9, how many people buy only product B?

-6.8+2.3

3-15

They wish to raise $78,500 at the end of 2 years, making deposits at the beginning of each semester in an account that pays 22% annually, compounded semiannually. What amount should the deposits be?

I bought 2 m of fabric for R$40, how much would I pay for 5 m of fabric

Imagine that a friend asks you whether or not you should start a washing machine business. For this, it provides you with the following information which is 100% accurate. Price of washing machines: $300,000 Unit variable cost of washing machines: $150,000 Annual fixed cost: $20,000,000 Furthermore, it is known that the annual sale of washing machines will be equal to 100 units. Based on the above information: Do you recommend your friend carry out the business? Yes, since there are positive utilities No, since the profits are negative

The functions f and g are given by f(x) = x^4 and g(x) = 4x^2. Isse claims that the graphs of the functions intersect at the point (-2,16). Is Ise's claim true? Motivate your answer.

investigate whether g(x) = 5+ e^2x+In6 is a possible primitive function to g(x) = 3e^2x+In4 Justify your answer.

1. If f(x) = –6x + h, what is the image of 2? A.2 B. 14 C. –12 D. h – 12 E. h + 12

3. If f(x) = 2x + 5 and g(x) = –3x + 14, what is the value of f(4) + g(17)? A.17 B. 41 C. 50 D.76 E. –24

Find the inverse function of f(x) = x5 − 2.

Reciprocal of -2 and 3/7

Suppose that Y varies directly as X and inversely as Z, and Y 🟰 9 when X 🟰 12 and Z 🟰 4. Solve for Y when X 🟰 45 and Z 🟰 5.

Communication and Thinking The time it takes to drive from Orangeville to the Vaughan Mills Mall is normally distributed with a mean of 52 minutes and standard deviation of 5 minutes. What intervals could you estimate, using the knowledge from this activity, that do not include the mean as a max or min? For example, P of X is less than or equal to 52 is 50% is an interval we could estimate. However, it includes the mean as the maximum of the interval. Another example is P of 52 is less or equal to X is less or equal to 57 equals 34% as an example of a probability interval that we know from this activity, but it includes the mean as the minimum. Include at least 7 intervals and their probabilities.

Round 0.00032189 to three significant figures

4. The Old Towne Road Group sent its' top specialist, Tegan (aka Stat Buddees) to get information on why the Street Farmacyst plastic bottles did not explode under pressure. They selected 36 Street Farmacyst bottles and got a mean of twenty-six with a population standard deviation of 1.5. a. What is the maximum error? ( (2pt.) b. Help her construct an 80% confidence interval for the mean number of plastic bottles that did not explode under pressure. (3pts)

How long is a piece of cardboard? which has a sign 8.3 cm long aligned left 30 mm and right 4 cm?

A laser pointer is shined through air (n=1.0) and enters another medium at an angle of 45degrees. If the angle of refraction is 24°. What is the index of refraction of the medium.