1. What is the solution of n^2-49=0? a.-7
b.7
c.+7
d. no solution

2.What is the solution of x^2+64=0?
a.-5
b.8
c.+8
d. no solution

3.What is the side length of a square with an area of 144x^2?
a.12
b.12x
c.+12x
d. no solution

4.What is the value of z so that -9 and 9 are both solutions of x^2+z=103?
a.-22
b.3
c.22
d.184

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2