Glenna wants to rent a car for a trip to Key West for one week. She calls two car rental companies to get prices. Mr. Kotter’s Rentals rents a Cadillac Escalade for $99 for one week plus $0.11 per mile over 100 miles. Barbarino’s Rentals has the same vehicle for $75 per week and $0.15 per mile over 150 miles. If it is 432 miles to Key West, which company has the better deal? How many miles would Glenna drive before she would be spending the same amount at either company?
@e.mccormick

Question

Glenna wants to rent a car for a trip to Key West for one week.  She calls two car rental companies to get prices. Mr. Kotter’s Rentals rents a Cadillac Escalade for $99 for one week plus $0.11 per mile over 100 miles. Barbarino’s Rentals has the same vehicle for $75 per week and $0.15 per mile over 150 miles. If it is 432 miles to Key West, which company has the better deal? How many miles would Glenna drive before she would be spending the same amount at either company?
@e.mccormick

anonymous · Answer

I'm too lazy to do it but poona ur smarter than most

sleepyhead314 · Answer

(amount per week) + (amount per mile)*(432 - "over _#_")

sleepyhead314 · Answer

you closed the question @pooja195 do you still need help?

pooja195 · Answer

yes lol i didnt want attention attracted to it i get confused when to may people answer but im totally lost on this

sleepyhead314 · Answer

did you kinda get the format I gave above
or would you like for me to rephrase it? :)

pooja195 · Answer

hmmm can you please rephrase it :)

sleepyhead314 · Answer

you keep the flat number away from the variable
so the flat number in this case is "$ per week" (since you are only renting for a week)
like   y = mx + b
"$ per week" is b

pooja195 · Answer

y=.11/100+75?

sleepyhead314 · Answer

you are going to try to make two different equations to compare them :P

sleepyhead314 · Answer

m = rate
which will be the  "$ per mile"

sleepyhead314 · Answer

x = (432 - "over ___ miles")

sleepyhead314 · Answer

y = mx + b

pooja195 · Answer

100?

sleepyhead314 · Answer

umm
yes the  "over ___ miles" for the first equation will be  100

pooja195 · Answer

ok so y= 100/1x-432?

sleepyhead314 · Answer

hmmm

"$ per week" = b
"$ per mile" = m
(432 - "over ___ miles") = x

for     y = mx + b

for the first set of information
b = "$ per week" = 99
m = "$ per mile" = 0.11
x = (432 - "over ___ miles") = (432 - 100)

so   y = (432 - 100)*(0.11) + 99

pooja195 · Answer

O_O

anonymous · Answer

:(

sleepyhead314 · Answer

where'd I loose you, sorry

sleepyhead314 · Answer

y = (432 - 100)*(0.11) + 99 = 135.52   btw

pooja195 · Answer

Ok i used that and the secound equation i had already :P forgot to put it and came up with Barbarino’s. Glenna would have to drive 887.5 miles to have both deals be the same.

sleepyhead314 · Answer

no, not what I got...

sleepyhead314 · Answer

unless I'm reading it wrong
does the "$0.15 per mile over 150 miles." 
mean that only  0.15 will be added per mile *after* 150 miles have been driven?