finding intervals

finding intervals

E={v|v>4} F={v|v<7}

Write using interval notation

Let f be a function defined for all real numbers. Also, let f', the derivative of f, be defined as f'(x)=((x-2)^3))/x. Options are (-Infinite, 0) and (2, infinite) (-Infinite,...

Round to the nearest three decimal places. I'm not sure if i should take the derivative and then solve for 0. Using critical values. I'm very confused and my notes are no help.

Find the intervals in which g(x)< 0 and those in which g(x)>0

1. Chips Ahoy wants to perform a study to determine the number of chocolate chips in their cookies. To that end, they collected a sample of 40 cookies. The mean of this sample is 23.95 chocolate chips...

Let f(x)=(7x-2)/(x+2). Find the open intervals on which f is concave up (down). Then determine the x-coordinates of all inflection points of f. 1. f is concave up on which intervals...

An employer claims that full time employees have a mean income of $35,000. A sample of 200 ?employees was considered. Their mean salary was $34,000. Assume a population standard ?deviation of $4,000...

You take a sample of 22 from a population of test scores, and the mean of your sample is 60. You know the standard deviation of the population is 10. What is the 99% confidence interval...

A person claims to be able to predict the outcome of flipping a coin. This person is correct 16/25 times. Compute the 95% confidence interval on the proportion of times this person can predict coin...

Express in interval notation 2x-5≤-11 or 5x+1≥6

The length of a rectangle is 5 inches more than twice the width. If the area is to be at least 18 square inches, what are the possibilities for the width?

a) y=x3 + e2x b) y=5xe-4x c) y=x2e-(x^x)

a) what is the domain, range, and periodic y=csc x? b) what is the relative minimum in the interval 0<_x<_ pi c) what is the relative maximum ion the interval pi<_x<_2pi (<_...

Determine the open intervals whewhere the graph of f (x)=-(1)/(x+1)^2 is concave up or concave down.

Consider the function f(t) = 6sqrt(x) + 9 on the inverval [1,10]. Find the average or mean slope of the function on this interval By the Mean Value Theorem we...

A generator produces electrical power, P, in watts, according to the function: P(R)= 120/ (0.4 + R)^2 where R is the resistance, in ohms. Determine the intervals on which the power...

Suppose g'(x)= x^4 +x^2 +1. Find the x values in the interval [-3,4] where g(x) takes its minimum. The answer is at x=-3 but why? I'm not sure how to get this.

Consider the function f(x)=5x+6x-1. For this function there are four important intervals: (-infinity,A],[A,B),(B.C) and [C,infinity) where A, and C are the critical numbers and the function...