Answer:
Step-by-step explanation:
Answer:
f^-1(4) = 2
f^-1(-5) = -4
f^-1(0) = 0
Step-by-step explanation:
To find the inverse of the function, we simply switch the places of x and y
You simply find the value given on the y-axis and trace to the x-axis
Thus, we have the following ;
f^-1(4) = 2
f^-1(-5) = -4
f^-1(0) = 0
Answer:
3.125 mg/ oz
Step-by-step explanation:
Amount of instant tea = 24 ounces
Amount of green tea = 12 ounces
Caffeine in instant tea = 24/8*30= 90 mg/oz
Also, caffeine in green tea = 12/8*15 =22.5 mg/oz.
Total amount of mixture= 24+12= 36 ounce
Total amount of caffeine in the mixture = 90+22.5 = 112.5 mg/oz
Caffeine per ounce in the final mixture = 112.5 / 36 = 3.125 mg/ oz
Answer: $397.9
Step-by-step explanation:
First you need to find 65% and 8% of 230
<em>(230 x 65) / 100 = 149.5</em>
<em>65% of 230 is 149.5</em>
<em />
<em>(230 x 8) / 100 = 18.4</em>
<em>8% of 230 is 18.4</em>
Add 230 to the 65% and 8% markups to get the total retail cost
<em>230 + 149.5 + 18.4 = 397.9</em>
The total retail cost of the tent it $397.9
Step-by-step explanation:
multiply the first equation by 1, the second by -1 and add.
x + 2y = -16
-x - 6y = 28
--------------------
0 - 4y = 12
-4y = 12
y = -3
x + 2×-3 = -16
x - 6 = -16
x = -10
