Multi-step Single Variable Equation
Sara is selling cookies for a fundraiser. Each box of cookies contains 10 and costs $3. On Monday, she sold $75 worth of cookies. On Wednesday she sold $36 worth of cookies. By the end of the week, she earns a total of $243, including the money from cookies from Saturday. How much money did she earn on Saturday?
3x+75+36= 243
x = 44
Every week, Lisa takes $30 out of her savings bank to spend for entertainment. An extra $100 is taken out to pay for necessities. She wants to spend less than $500 in total each month. Write an equation to show the amount of money she could spend.
30x-100<500
20
Nancy just moved into a new apartment. Her landlord allows her to multiple pets, but no more than 5. Nancy has a few dogs and has gotten a new puppy. Write an expression to show the number of pets she has.
1<x+1<5
0<x<4
The average grade in math class is 75, but the highest is 3 times the difference between 75 and 15.
3|x-75|=15
x = 70 , x = 80
Carly gives out Halloween bag of treats. Each bag of treats usually contains 10, but can have at least 2 more or less. Write an inequality to show the ranges of each treat bag.
|x+3|≤ 7
x≤4 x≥-10
Emily wants to save $240 in her bank by the next month. If she saves $21 in the first week and $20 in the second, how much will she need to save in the next two weeks to meet her goal? Write an equation and solve for it.
(21+20.10)+2x=240
98.95
Nathan wants to get a gym membership using his savings account. He will pay $30 each month and an additional $3 for equipment use. He wants to make do and spend no more than $300. Estimate how many months can he afford to pay for membership?
30x+3 > $300
99/10 = 9.9
8 months
Joe's candy shop have twice the number of average bags of candy made each day compared to Candyland. The average is 250, and if Joe's candy shop requires it to make at least 2,000 by the end of the week. Write an equation and solve to see the least amount of bags of candy he needs to produce each week.
2|x+250|=2,000
750.