Use the frequency table below to find the average score students earned on a test.
Score
Frequency
65
6
70
10
75
16
80
12
85
8
90
6

So you would multiply the frequency to the score because finding the average is adding everything. then you add those numbers up. then, add up the frequency to get your divisor. After you divide you take your number and round to the hundreth or tenth

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: