12. Nancy is trying to decide which cell phone plan would be the right one for her. She has narrowed her choices down to two, Spirit and Horizon. Spirit (s) has a fixed fee of $20 and an
additional charge of 5 cents per minute. Horizon (h) has no fee and charges 15 cents per minute.
Write two equations that could be used to determine the total cost for each plan for 300 minutes?
A. s = 5x + 20
B. s = 0.05x + 20
h = 15x
h = 0.15x
a. s = 15x
h = 5x + 20
D. S = 0.15x
h = 0.05x + 20

correct answers below:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

(f+g)(x) = 3^x+10x+4x-2

      =3^x +14x-2

choice b

he can fill 250 bottles completely

step-by-step explanation: