The Best answer out of the answers above is option 3. A trapezoid has only 1 set of parallel sides.
Hope this Helps! ~Giz
The reason that there is an extra 14 cents being charged is simply because of tax
The Addition Property of Equality justifies Emily's first step. She added 9 to both sides, canceling out the minus 9 while keeping the equation equal.
Answer:
60
Step-by-step explanation:
x + 0.30x = 78
1.30x = 78
x = 60