2x + 3 = 11
x = 4
4x + 6 + 3 =17
x = 2
d = 2r, solve for r
r = d/2
-5n + 2n < 3
n > -1
2x + 4 = 8
x = 2
6r -1 + 6r = 11
r = 1
$5
I = prt, solve for t
t = (I / pr)
-p - 4p > -10
p < 2
-3x - 5 = 10
x = -5
18 = 3(3x - 6)
x = 3
331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?
54 students in each bus
P = 100a / t, solve for a
a = pt / 100
9 > 2(m + 1) -3
5 > m
3 - (1/5)x = 4
x = -5
You bought a magazine for $5 and four erasers. You spent $25. How much did each eraser cost?
5 Erasers
Maria bought seven boxes. A week later half of all her boxes were destroyed in a fire. There are now only 22 boxes left. With how many did she start?
w = 3x + 7y, solve for x
x = (w - 7y) / 3
6 - 4(6n + 7) > 122
n > -6
(1/3)x + 6 =12
x = 18
On Tuesday Mei bought five CDs. On Wednesday half of all the CDs that she had were destroyed. On Thursday there were only 23 left. How many did she have on Monday?
She had 41 CDs.
Mr. Briggs sold half of his comic book and then bought sixteen more. He now had 36. With how many did he begin?
A = (1/2)h(b1 + b2), solve for b2
b2 = (2A / h) - b1
-8x + 2x - 16 < -5x + 7x
-1 < x