Each problem has one error. Find the error
and describe the incorrect step on the answer
sheet in the appropriate spot. Then solve the
problem.
x - y = 0
5x + 2y = 7
x = y
5x + 2y = 7
5y + 2y = 7
7y = 7
y = 1
x + 1 = 0
X = -1
Solution: (-1,1)
Describe the error in the field below.

Hannah paid $3.20 for 16 ounces of potato chips. hank paid $3.23 for 17 ounces of potato chips. who paid less per ounces?

Factor and solve to find roots x squared -x - 90 =0

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236