How can you use two-step equations to represent and solve real-world problems

Question

How how can you use two-step equations to represent and solve real-world problems

Answer 1

Fixed quantity + a ratio.

Ex. Flat fee then $x per unit

Here are some examples that have appeared

here on Wyzant.

Phone company charges flat fee of $20 per month plus

FIVE CENTS per minute. How many minutes for $100?

100 = 0.05x + 20

80 = 0.05x

8000 = 5x

x = 1600

Here;s one that showed up at my job.

Software buffer can hold 525000 bytes = 525 mb

There is a 43 byte packet header and each transaction

record is 255 bytes long. How many transaction records

can fit in the buffer including the header?

525000 = 255 N + 43

N = (525000 - 43)/255

N = 2058