Jane evaluates x2 – 3x + 5 for x = –2 below. step 1: (–2)2 –3(–2) + 5 step 2: = –4 + 6 + 5 step 3: = 7 what, if any, was jane’s mistake?

Jane didnt add the terms in step 3

There is nothing wrong, she has no mistakes. 

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.