Could someone do the step-by-step for the problem below I have no idea how to solve it.
Your local gas stations are having a price war. During the past 7 days, they have lowered the price of regular gas by $.02 each day. Define a variable. Then write and solve an equation to find the total change in gas price.
To solve this problem, let's define a variable to represent the initial price of regular gas. Let's call this variable "P".
Step 1: Define the variable:
Let's say P represents the initial price of regular gas.
Step 2: Determine the change in gas price each day:
According to the problem, the gas price decreases by $0.02 each day for 7 days.
Step 3: Write an equation to find the total change in gas price:
The change in gas price over 7 days can be calculated by multiplying the daily change by the number of days. In this case, the daily change is $0.02, and the number of days is 7. Therefore, the equation becomes:
Total Change = Daily Change × Number of Days
Total Change = $0.02 × 7
Step 4: Solve the equation:
To find the total change in gas price, we need to calculate $0.02 multiplied by 7.
$0.02 × 7 = $0.14
So, the total change in gas price over 7 days is $0.14.