The total amount of money Eric spent is $24.4 dollars! Hope this helps!
Answer: C) 
Step-by-step explanation:
First we need to calculate the area of the square base.
This is 7*7 which equals 49 cm squared.
Plug this value into the formula of a square pyramid which will be
, now plug in the h, which is 9 cm.

Now solve.
V = 147 cubic cm.
Answer:
130
Step-by-step explanation:
2x+100=5x+55
subtract 55 from both sides
2x+45=5x
minus 2x
45=3x
divide by 3
x=15
plug it in
2(15)+100=130
Answer:
The least whole number is the number 1
Step-by-step explanation:
we have

Remember that
<u>Whole numbers</u> are positive numbers, including zero, without any decimal or fractional parts [0,1,2,3,4,5,6,...]
so
Solve the inequality for x
Divide both sides by 400


Rewrite

therefore
The least whole number is the number 1
Answer:
8x-1
Step-by-step explanation:
add up all the x's which will be 8x
then do the regular numbers which is -2+1 is -1
therfore it is 8x-1