7) Which equation below is an identity?
a) 5f + 6 = 5f – 6
b) 4q + 3 = 3q – 3 + q
c) 6t + 1 – 3t = –2t – 1
d) 8a – (a + 4) = 9a – 2(a + 2)

8) Which equation below has no solution?
a) 4z – 1 = –4z + 10
b) 7n + 9 = 7n – 2
c) 6s + 5 = 5s – 6
d) 8c – 3 = 8c + 7 – c

9) Chris and Lucy went to a baseball game. They each bought a bag of peanuts and
Lucy purchased a bottled water. Chris had a $10 gift card toward the cost and paid
the rest, which came to $32.00. If a baseball ticket costs $14.75 and a bag of
peanuts costs $4.50, what is the cost of a bottled water?

Question

7) Which equation below is an identity?
a) 5f + 6 = 5f – 6
b) 4q + 3 = 3q – 3 + q
c) 6t + 1 – 3t = –2t – 1
d) 8a – (a + 4) = 9a – 2(a + 2)

8) Which equation below has no solution?
a) 4z – 1 = –4z + 10
b) 7n + 9 = 7n – 2
c) 6s + 5 = 5s – 6
d) 8c – 3 = 8c + 7 – c

9) Chris and Lucy went to a baseball game. They each bought a bag of peanuts and
Lucy purchased a bottled water. Chris had a $10 gift card toward the cost and paid
the rest, which came to $32.00. If a baseball ticket costs $14.75 and a bag of
peanuts costs $4.50, what is the cost of a bottled water?

anonymous · Answer

solve the equation.
10) –11 = q + 8
11) d – 6 = –13
12) 12.9 = 3m
13) −4= y/7
14) −5=13/42x
15) 3(b + 2) – b = 2b + 6
16) 11 – 4r = 5r – 11 – 9r
17) 4(h – 3) – 9 = 3
18) 72 = –2(–6 + 5y)
19) –4x + 7 = 5(2x – 1) – 3(–12 + 2x)
20) 8= j−4/5
21) 17+z/3=43

anonymous · Answer

7) you put variable in one side and numbers in another side. After calculating if you get the form 0=0 then it's identity
8) Same as (7) However after calculating the variable is still there, and equal to a constant

anonymous · Answer

hope it help