Answer:
b
Step-by-step explanation:
Top left
x = 25
bottom left
x =81
right
x =17
Answer:
45
Step-by-step explanation:
Flip the fraction, 1/5 to 5/1, and reverse the equation to a multiplication problem.

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Answer:
Pencils cost $2
Markers cost $1
Erasers cost $0.25
Step-by-step explanation:
Let pencils be denoted by P, markers by M and erasers by E. The following linear system can be modeled from the data provided:

Solving the linear system:

Pencils cost $2
Markers cost $1
Erasers cost $0.25