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>
Use the Pythagorean theorem /look at the picture/
? = x
{ 5+ pi}/ 6{ 2n/22/7} ( 5, pi /6 2n 3.147 }