Answer:
After 460 calls plan 1 is more economical than plan 2
Step-by-step explanation:
Plan 1: 36x + 0y
Plan 2: 13x + 0.05y
36x < 13x + 0.05y
36x - 13x < 0.05y
23x < 0.05y
23/0.05x < y
460x < y
Equation for what? Amount after so and so number of years?
If so, then A = $70(1+0.10)^t, where t is the # of years.
Answer:

You should have a circle on -1 with the arrow going left
Step-by-step explanation:
Subtract 8 from both sides.


Divide by -4

Since you are dividing by a negative, you need to flip the inequality.

4 or more apples could be green because if there are 3 or less red then there must be 4-7 green