Saturday

November 29, 2014

November 29, 2014

Posted by **Amy** on Sunday, March 7, 2010 at 2:15pm.

write a linear equation that gives the cost in dollers, y, in terms of the nunber iof days,x.

find the cost of a six-day ad.

- 9th grade -
**Reiny**, Sunday, March 7, 2010 at 2:34pmActually you have more information than is necessary.

"it cost $2 per day to place a one-line ad in the classifieds plus a flat service fee" ---> y = 2x + b

"one day cost $3 " ---> x = 1, y = 3

3 = 2(1) + b

b = 1

equation: y = 2x + 1

(check: 4 days cost $9,

y = 2(4) + 1 = 9, Check!

so for 6 days

y = 2(6) + 1 = $13

**Answer this Question**

**Related Questions**

Honors Algebra - Hi, I need some help with my Algebra. This is how it goes: Yet ...

geometry - a phone company charges a flat monthly fee of $15 for cell phone ...

Math - Car Rentals charge 20 dollars per day plus a 10 dollar service charge to ...

Algebra - A car rental company charges $24 per day plus $0.75 per mile driven. a...

Math - The cost of renting a car for one day is $32 plus $.08 per mile. How much...

Math - A company manufactirung snowboards has fixed costs of $200 per day and ...

algebra2 (math) - The Cost of installing new kitchen cabinets is $150 for ...

math - A piano manufacturer has a daily fixed cost of $1200 and a marginal cost ...

MATH ALGEBRA (2ND TIME POSTING! ) Please Hlep!! :) - The Cost of installing new ...

calculus - a company maufacturing surfboards has fixed costs of $300 per day and...