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>
Let's assume two variables x and y which represent the local and international calls respectively.
x + y = 852 = total number of minutes which were consumed by the company (equation 1)
0.06*x+ 0.15 y =69.84 = total price which was charged for the phone calls (Equation 2)
from equation 1:-
x=852 -y (sub in equation 2)
0.06 (852 - y) + 0.15 y =69.84
51.12 -0.06 y +0.15 y =69.84 (subtracting both sides by 51.12)
0.09 y =18.74
y= 208 minutes = international minutes (sub in 1)
208+x=852 (By subtracting both sides by 208)
x = 852-208 = 644 minutes = local minutes
The answer to this in Scientific Notation is
The answer is 160/3 I think
Answer:
-2
Step-by-step explanation:
y2 - y1 / x2 - x1
7 - (-1) / -8 - (-4)
8/-4
= -2
