Answer:
Step-by-step explanation:
surface area of two trapezoids=2[(12+8)/2×3]=2[30]=60 cm²
surface area of side rectangles=10×8+10×12=10(8+12)=200 cm²
surface area of top=10×5=50 cm²
surface area of bottom=10×3=30 cm²
Total surface area=60+200+50+30=340 cm²
Answer:
21 books
Step-by-step explanation:
130-4=x
x/6= answer
Answer: D) 
Step-by-step explanation:
Let x be the number of $2 increases in price and y be the revenue.
By using the given table , lets check all the options
A) 
For x=1, y=1045

B) 
For x=1, y=1045

C) 

D) 

Hence, this is the quadratic equation that models the data.
Answer:
C. 3
Step-by-step explanation:
subtract 3 from both sides
15 = 5x
Divide by 5 on both sides
3 = x