(1-0.15)=0.85
0.85 (155.25)=131.962
estimated answer
131.962 is about $132.00
Answer:
20
Step-by-step explanation:
x/2+15=25
x/2=10
x=20
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Answer:
(300 + 50x)/(2 + x)
Step-by-step explanation:
Let the cost of teachers' edition books be t
Let the cost of students' edition books be s
So t = 150; s = 50
Then the total cost of 2 teachers' editions and x students' editions is 2t + sx = 2 × 150 + 50x = 300 + 50x.
The total number of books is 2 + x.
So the average cost per book is (300 + 50x)/(2 + x)
Answer:
Step-by-step explanation:
3/7^2 x 2/5^2
