Zachary used the calculations shown to find how much he would spend on 16 ounces of pistachios.

6 ounces of pistachios cost $7.50
StartFraction 7 dollars and 50 cents Over 6 ounces EndFraction = StartFraction dollar-sign question mark Over 1 ounce EndFraction
Unit price = $0.80 per ounce
(16 ounces) (StartFraction 80 cents Over 1 ounce EndFraction) = 12 dollars and 80 cents

What was his first error?

He made a math error

Step-by-step explanation:

6 ounces of pistachios cost $7.50

take 7.50 / 6=1.25 per ounce  ( not .80 per ounce)

Then 1.26 * 16 = 20.00 for 16 ounces

d

step-by-step explanation:

i would be happy to . most people on would also love to i'm sure. if you just want someone who has done algebra before and want a little more personal relationship than just begging strangers for , i can certainly be of service. i do have college myself so i might not be 24/7.