Word Problems
Rufus collected 18 pounds of aluminum cans to recycle. He plans to collect an additional 2 pounds each week. He wants to collect a total of 42 pounds of aluminum cans. Let x represent the number of weeks Rufus collects aluminum cans. What would the equation look like?
18 + 2x = 42
Is this a function or no?
What is the domain?
(1,8) (3,5) (5,8) (9,9)
Yes,
1, 3, 5, 9
1x + 2 = 8
x = 6
Adding integers that are both positive makes a...?
Positive answer
9 x 9 + 3
84
Mako’s goal is to save $42. He currently has $2 and plans to save $18 per week. Let x represent the number of weeks Mako saves money. What would the equation look like?
2 + 18x = 42
Is this a function or no? Why or why not?
(2,3) (2,8) (3,8)
No, the 2 input has multiple outputs
9x + (4 x 7) = 100
x = 8
Adding integers of opposite signs would be...?
240
The water level of a river is 42 feet and is receding at a rate of 2 feet per day. Let x represent the number of days the river recedes. After how many days will the water level be at 18 feet? What would the equation look like?
42 - 2x = 18
Is this a function or no?
What is the range?
(2,7) (3,9) (12,21) (2,22) (9,9)
No,
7, 9, 21, 22, 9
x = 7
Multiplying by the same signs is a...?
Positive answer
(92 + 7)3
297
Two friends order the same dinner. The total bill was $42. Each friend ordered an entrée for $18 and a dessert. Let x represent the cost of one dessert. What would the equation look like?
2 (x + 18) = 42
Domain - 9, 5, 4, 33
Range - 4, 3, 9, 23
(9,4) (5,3) (4,9) (33,23)
9(x + 9) + (9x) = 63
x = 3
Multiplying or dividing with different signs is a...?
Negative answer
21(xy)
21xy
A membership to gym A costs $42 plus $1 per visit. A membership to gym B costs $18 plus $4 per visit. After x visits, the cost of the memberships will be the same. What would the equation look like?
x + 42 = 18 + 4x
Is this an ordered pair?
(23)
No, it is just a number in parenthesis
What is the answer of (8x + 9y) x 3 when y = 3 and x = 21
585
The sum of an integer and its opposite is always equal to...?
0
You get a free 500 points because...(guess why)
You are epic math person