Equations
Determine if this value would make the equation true.
x/7 =13,if x = 91
TRUE!
Solve using an equation.
Sarah swam 200 meters more than Molly. Sarah swam a total of 800 meters. How many meters did Molly swim?
m + 200 = 800
x = 600
Please identify the independent and dependent variable in the situation.
A helicopter travels 70 miles per hour.
I: # of hours
D: total miles
Determine if this would be true or false.
k / 2 is less than or equal to 4 (when k = 8)
8 / 2 is less than or equal to 4
4 is less than or equal to 4
TRUE
Solve.
7x < 98
x < 14
2.1x = 23.1
X = 11
Please write an equation to represent the problem. DO NOT SOLVE! :)
Lucy has a coin collection of quarters from different states. The value of her coin collection is $9.50. How many quarters does she have in her collection?
Variable: number of quarters
Equation: 0.25x=9.50
Please identify the independent and dependent variable in the problem.
For every guest attending the wedding, the cost increases by $85.00
I: # of guests
D: total costs
If I were to graph a problem with a closed circle shaded to the right on a number line, would that be greater than OR greater than/equal to ?
Greater than or equal to, because it is a closed circle.
x / 6 is greater than or equal to 7
x is greater than or equal to 42
144 = 9x
X = 16
Solve using an equation.
A large box of cereal costs $3.50. How many boxes can you purchase with $28.00?
3.50x=28
x = 8 boxes
Please identify the independent and dependent variable in the problem.
For every piece of chocolate cake Ms. Birkle eats, the more likely she is to get a sugar crash.
I: pieces of cake eaten
D: likelihood of a sugar crash
Please graph the following on a number line.
15.5 > x
<-----------|
15.5
86 > x −18
x < 104
j −18 = 43
j = 61
Miles can type 60 words per minute. Let w represent the number of words and m represent the minutes. Which equation best represents this?
A. 60 + w = m
B. 60w = m
C. m / 60 = w
D. 60m = w
D. 60m = w
For every guest attending, the party cost increases by $15.00. Determine which of the following represents the independent variable.
A. The total cost
B. The $15.00 per person
C. The number of guests
D. The number of parties
C. The number of guests
Which inequality is true when x=7?
A x + 6 ≥18
B. x − 6 >18
C. 11+ x <18
D. 11− x ≤18
D. 11 - x ≤18
Madeline has to earn at least 80 points for her science fair project. So far on the rubric she has 64 points. Write and solve an inequality to show how many points Madeline needs.
x is greater than or equal to 16
Which of the following make the equation true?
b / 4 = 16
A. 64
B. 4
C. 16
D. 8
A. 64
At Costco a case of 12 boxes of macaroni and cheese can be purchased for $18.00. How much is each box of macaroni and cheese?
x = $1.50
The relationship between the time studying and the score on a test is described below. Determine which is correct.
A. the time studying depends on the score of the test
B. the score of the test depends on the time studying
B. The score of the test depends on the time studying
Which description below describes the equation:
x / 4 = 55
A. The number of mugs that fit four to a box
B. Fifty-five mugs, which will go in four boxes
C. If each box holds four mugs then there are
fifty mugs
D. The number of mugs when four are broken
A. The number of mugs that will fit four to a box
Solve for p.
9p ≥ 40.5
p ≥ 4.5