49.75 - 8 = 41.75. 41.75 / 1.369 = 30.4967129. Let's round it to 2 decimal points, which is 30.5. The maximum number of litres of gasoline that Terri can purchase is 30.5. If m= money, c= price of car wash and g= price of gasoline per litre, the equation is (m - c) / g.
Answer: 13 months
Step-by-step explanation:
I made these into equations first.
40 (initial fee) + 65x (x is the number of months) = total cost
170 (initial fee) + 55x (x is the number of months) = total cost
There are two ways to go about this.
1. Put it into a graphing calculator (or a site like desmos) and see where the lines intersect (the easiest way)
2. If you don't have access to either of those, do the old guess and check by plugging in numbers of months until you get your desired answer.
S = 32200 + 700y
S stands for salary and y stands for year
Yes, 60° is right.
Do you need me to explain why?
