Answer:
. The sweaters cost $10 or less each. We graph it on a number line at 10 and use a filled in dot pointing towards zero for less than.
Step-by-step explanation:
Mrs. Smith buys 3 sweaters (represented by 3s) and 2 jeans (represented by 2j) for a total of at most $120. We don't know the total but we do know she couldn't spend more than $120.
We write
.
We know the jeans cost $45 each, so j=45. We substitute,

We solve for s by subtracting 90 to the other side and dividing the result by 3.

.
The sweaters cost $10 or less each.
Answer:
x = 17/3
Step-by-step explanation:
3(2x - 3) + x = 4(x + 2)
7x - 9 = 4x + 8
Add 9 to both sides:
7x - 9 + 9 = 4x + 8 + 9
Simplify:
7x = 4x + 17
Subtract 4x from both sides:
7x - 4x = 4x + 17 - 4x
Simplify:
3x = 17
Divide both sides by 3:
3x/3 = 17/3
x = 17/3
Hope this helps!!
Answer:
Step-by-step explanation:
4. 10x + 30 = 90
10x = 60
x = 6
complementary
5. 4x + 40 + 3x = 180
7x + 40 = 180
7x = 140
x = 20
supplementary