6) Mrs. Cormier wants to get the best deal on an internet provider. Centurylink charges
$65 a month with no set-up fee.
Suddenlink only charges $35 a month, but
has as $90 set-up fee. Write a system of
equations to model the plans. Determine
when both plans are equal in charge.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)