Date: Period:
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6th Grade Math Quiz - 2.5
(6.3E) Multiply and divide rational numbers.
(6.4G) Generate equivalent forms of fractions, decimal, & percents.
(6.5B) Solve for the part, whole, or percent.
(6.9AC) Write/solve one-variable equations and inequalities.
(6.4B) Ratio and rates.
1. After 4 new students joined a class, the class has 30 students. Which equation can be used to find n, the number
of students in the class before the new students joined? (6.9A)
A. = 30
C. 4n = 30
D. n +4= 30
B. n-4 = 30

1. D.

2. A.

3. D.

Step-by-step explanation:

1. Initial number of students = n

Number of new students that joined the class = 4

New total number of students after 4 students joined the class (n + 4) = 30

The equation that can be used to find the number of students in the class before new students joined, n, is represented by the equation below:

2. The goal of Lucy is to walk at least 15 miles. This means, she must walk a distance that is equal to 15 or greater than 15 (goal: ≥ 15).

Rate of walking = 5 miles per hour

Number of hours = h

To determine how many she would walk in order to attain her goal, the inequality below represents the situation:

3. Mr Sanchez has $40 as the maximum he can spend. This means the total of all his spending must be equal to or less than $40 (total spending: ≤ 40).

Cost of ticket to the museum = $5

Cost of spending on other things at the museum = p dollars

Total spending =

Since total spending limit is $40, the following inequality can be used to determine the possible values for p:

3,000,540

step-by-step explanation:

f(x) = y

f(-3) = -5

step-by-step explanation: