7th grade math help Ms. Sue
posted by Delilah on .
3.
Which of the following equations has an infinite number of solutions? (1 point)
3x – 3 = –4x
2y + 4 – y = 16
7x + 5 = 4x + 5 + 3x
6y – 2 = 2(y – 1)
5.
Write an inequality for the word sentence: k is less than zero. (1 point)
k > 0
k ≥ 0
k < 0
k ≤ 0
Solve the inequality.
6.
q – 12 ≥ –13 (1 point)
q ≥ 1
q ≥ –1
q ≥ 25
q ≥ –25
7.
12p < 96 (1 point)
p < 8
p < 108
p < 84
p < –8
8.
g/–5 < –18 (1 point)
g < –23
g > –90
g > 90
g < 90
9.
The result of 6 subtracted from a number n is at least 2. What numbers are solutions? (1 point)
n – 2 > 6; n > 8
n – 6 ≥ 2; n ≥ 8
n + 6 ≥ 2; n ≤ 4
n + 6 ≥ 2; n ≥ 4
My answers:
3. 7x + 5 = 4x + 5 + 3x
5. k < 0
6. q ≥ –1
7. p < 8
8. g > –90
9. n – 6 ≥ 2; n ≥ 8

3. ok
5. ok
6. ok
7. ok
8. not quite. You changed the direction ok, but you actually have to do the multiplication. (5)(18) = 90, so g>90
If you just multiply by 5, then you are left with g < 90
9. ok
pretty good work!