Writing Equations
Mr. Kerby earns 5 dollars per day, d. So far this school year he has made $250. Write an expression to represent the situation.
5d = 250
n = 15
What sport did Mr. Kerby play in college?
Lacrosse
x + 5 > 3
x > -2
A package of 5 gloves costs $29.45. What is the cost of a single pair of gloves?
$5.89
Cole buys a new laptop for $335. He makes a down payment of $50 and pays the rest in 6 equal monthly payments, p. What equation represents the relationship the relationship between the cost of the laptop and Cole's payments?
6p + 50 = 335
0.6p + 4.5 = 22.5
p = 30
You typed a 36-word paragraph in 2/3 of a minute. What is your typing speed in words per minute?
54 words per minute
x - 3/2 > -3
x > -1.5 or -1 1/2
12
Tucker has 159 golf balls. He has 3 more than twice Marley's golf ball collection. Write an equation to represent the situation.
2m + 3 = 159
2/5x + 4 = 8
x = 10
Your house is 50 yards away from school. On a map, you are 3/4 inches away from school. If your current location is 3 inches away from your house, how many yards away are you from home?
200 yards
-4/3x < -8
x > 6
An airplane took 5 hours to travel 3,475 kilometers. What is the unit rate?
695 km/hr
Jayda babysat for 11 hours this week. That was 5 fewer than 2/3 as many hours as she babysat last week, h. Write an equation to represent the situation.
2/3h - 5 = 11
-4(x + 3) = 8
x=-5
1/2x - 3/4 = 5/8
x = 22/8 or 2.75 or 2 3/4
-1/5m > 2
m < -10
During a thunderstorm, 600 mm of rain dropped in 30 minutes.
How fast did the rain fall, in millimeters per minute?
How fast did the rain fall, in millimeters per hour?
20 mm per min
1,200 mm per hour
A group of 4 friends went to see Spiderman. In addition to their tickets, they bought a large bag of popcorn to share for $6.25. The total was $44.25
4m + 6.25 = $44.25
3/4(b - 8) = 3
b=12
4(6x - 9.5) = 46
x= 3.5
1/5n - 8 < 95
n < 515
A car travels 374 meters in 17 seconds. A bus travels 414 meters in 23 seconds. Which vehicle is traveling faster? By How much?
Car is traveling 4 meters per second faster.