Write and Evaluate Expressions with Variables
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Five after school clubs were introduced to the sixth grade class. After looking at the signup lists, Mr. Rogers found that the
number of students signed up for each of the clubs could be related to the number of students, r, signed up for the reading club.
Match each expression to the statement it represents.
3x (r + 4
|3x4 + 4
3XT - 4
(r - 4) = 3
17 / xr - 4
1 x 9 + 4
The math club has four less
than three times as many
students signed up as
the reading club.
The chess club has four less
than a third of the number of
students signed up for
the reading club.

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)

Which linear inequality is represented by the graph?