Wednesday
July 23, 2014

Homework Help: Precalculus

Posted by Jayson on Sunday, December 18, 2011 at 12:44am.

1. Determine the interval(s) on which x^2 + 2x -3>0

a)x<-3, x>1
b)-3<x<1
c)x<-3, -3<x<1, x>1
d) x>1

Answer is D, x>1
---------------------------------------
2. Determine when the function f(x)= 3x^3 + 4x^2 -59x -13 is greater than 7.

a) -5<x<1/3
b) -5<x<-1/3, x>4
c) x<4
d) x=-5, -1/3,4

Answer is: B
---------------------------------------
3. Provde the intervals you would check to determine when -5x^2 + 37x> -15x^2 + 12x + 15.

a) x=3, x=-0.5
b) x<-3, -3<x<0.5, x>0.5
c) x<-1, -1<x<15, x>15
d) x= 1, x=15
----------------------------------------

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Precalculus - Help with these questions help with these questions~ Thank you 1. ...
Math - help with these questions~ Thank you 1. Determine the interval(s) on ...
precalculus - Help appreciated~ 1.Use the quadratic formula to determine when f(...
Precalculus - determine the domain of the function and express in interval ...
Precalculus(URGENT) - determine the domain of the function and express in ...
Calculus - The function f(x) is defined as f(x) = -2(x+2)(x-1)^2 = -2(x^3 -3x + ...
Calculus - 1. Locate the absolute extrema of the function f(x)=cos(pi*x) on the ...
Honors Pre-Calculus - The prompt says "Graph each function. Determine the ...
Physics-calc - Suppose the position of an object is given by ->r(vector) = (3...
Calculus - consider the function y = 2sinx a) determine dy/dx b) calculate the ...

Search
Members