If it was one year it would be 2200 and you just keep adding 200 for each year.
5+4=9 9-2=7
7x(-2)= (-14)
your answer is -14
What does this mean buddy?
12.0/8=15. If you at .0 to a # the amount is the same just in a different way.
Answer:
13 months
Step-by-step explanation:
x is the number of months
first phone:
f(x) = 55x + 100
second phone:
g(x) = 51x + 150
now set up the inequality
g(x)<f(x)
51x + 150 < 55x + 100
Solve the inequality:
51x + 150 < 55x + 100
(get everything on the correct sides... combine the like terms)
51x - 55x < 100 - 150
-4x < -50
divide both sides by -4 (don't forget to flip the inequality sign when dividing by a negative number.)
x > 50/4
x > 12.5
round up to 13
