# math plz help! urgent!

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It costs Marie \$25 overhead and then an additional \$1.25 to make each barrette. She charges \$3.50 for each one. Write a function to model Marie's profit?

• math plz help! urgent! -

f(x)=3.5x-1.25x-25

• math plz help! urgent! -

oh sorry, I forgot to tell you that that isn't a choice. The choices are A) P = 2.25x - 25
Eliminate
B) P = 4.75x + 25
C) P = 2.25x + 25
D) P = 3.5x - 26.25

• math plz help! urgent! -

so the answer is d?

• math plz help! urgent! -

Lol no, it is A

• math plz help! urgent! -

3.5x-1.25x=2.25x. And the -25 stays the same

• math plz help! urgent! -

So I did your wave equation below Waves

• math plz help! urgent! -

It costs Marie \$25 overhead and then an additional \$1.25 to make each barrette. She charges \$3.50 for each one. Write a function to model Marie's profit?
A) P = 2.25x - 25
B) P = 4.75x + 25
C) P = 2.25x + 25
D) P = 3.5x - 26.25
2)
Thompson High School had a population of 1800 students in 2010. Every year since then, the population has grown by 50 students a year. Write a formula to model this situation if you let 2010 be t = 0.
A) P = 210 + 50t
B) P = 1800 + 50t
C) P = 2010 + 50t
D) P = 1800 - 50t
3)
Sam bought a car for \$25,000 in 2009. Since then the car has depreciated in value by \$1500 a year. Write a function that will allow you to calculate how much the car will be worth in 5 years if we let 2009 be t = 0.
A) C = 2009 - 1500t
B) C = 25000 - 1500t
C) C = 25000 + 1500t
D) C = 25000 - 2009t
4)
The Smiths are draining their 25,000 gallon swimming pool. It drains at a rate of 3,000 gallons an hour. Write a function that models the amount of water in the pool after t hours.
A) W = 25,000 - 3000t
B) W = 25,000 + 3000t
C) W = 3000 - 25,000t
D) W = 3000 + 25,000t

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