Consider the equations x+1=4 and (x+1)²=16.
a. verify that x=3 is a solution to both equations.
b. find a second solution to the second equation.
c. based on your results, what effect does squaring both sides of an equation appear to have on the solution set?

What is the answer to question 11? richard simplified an expression in three steps,as shown taking 04.10 segment one exam part one (flvs)

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

As a salesperson you get $53/day and $3.75/ each sal you make. if you want to make at least $128 in one day, how many sales would you need to make? a 10b 15c 20d 25