Answer:
D
Step-by-step explanation:
x² + 4 ≤ 2
- x + 4 < 2
Answer: 110 test were purchased
Step-by-step explanation:
Set P = number of packets of 10 test
Total cost = $30 + $11 x P = $151
$11xP = $151 - $30 = $121
P = $121/$11 = 11 packets were purchased
Test purchased = 11packets x 10 test/packet = 110 test were purchased
Answer: 110 test were purchased
<h3><em>Spymore</em></h3>
I don't know the correct answer from part b and I can't sing very well, so I'll skip that part.
The volume is length times width times height.

I used a computer calculator.
Answer: 77.616 cubic centimeters