Answer:
Sonya pays a flat fee of $30 for her phone bill and pays $2 per gigabyte she uses per month. Put Sonya's bill as an equation with <em>d</em> being how many gigabytes she uses per month.
Step-by-step explanation:
We get the flat fee of $30 from "30 + 2d" and the $2 per gigabyte from "30 + 2d" and since we want to find out Sonya's total bill, that's where the + in "30 + 2d" comes from. We want the variable to be <em>d</em> therefore <em>d</em> is how many gigabytes she uses per month.
Answer:
a. Probability = 0.15
b. Probability = 0.3
Step-by-step explanation:
Given
Solving (a): Probability of being somewhere else
This is calculated by subtracting the sum of given probabilities from 1.
Solving (b): Probability of being in bedroom or kitchen
This is calculated as: