Answer:
-3.45+5.1=1.65
Step-by-step explanation:
You could use a calculator (just sayin)
Answer:
68%
Step-by-step explanation:
17% × 4
68%
f(x)=20+300x
Also, Rex should find a different pool because that fee is ridiculous.
Answer:
(C) 
Step-by-step explanation:
To find the area of a prism, you calculate the area of the cross-section and multiply that number by the length. The cross-section of this prism is a trapezium, and the formula for this is

.
Insert your given numbers to find out the area of this prism's cross-section:

Now, multiply 90 by the length, 10cm, to find out the volume of the prism;
90×10=900cm³
Therefore, your answer id the third option.