Transcript 12b - grantham7

1. Danny earns $6.50 per hour working at a movie
theater. Which inequality can be used to find how many
hours he must work each week to earn at least $100 a
week?
A
C
6.50h < 100
6.50h < 100
B 6.50h > 100
D 6.50h > 100
2. Find the perimeter of the figure to the nearest tenth of a centimeter.
3. You are making pies to sell at a fundraiser. It costs $3 to
make each pie, plus a one-time cost of $20 for a pastry blender and a
rolling pin. You plan to sell the pies for $5 each. Which equation
could you use to find the number of pies you need to sell to break
even, or recover your costs?
3x = 20 + 5x
C. 3x - 20 = 5x
A.
+ 20 = 5x
D. 20 - 5x = 3x
B. 3x
4. FIND
.2.G)
Give the length of the line segment with endpoints at (5,2) and (2,6).
y
10
9
8
7
6
5
4
3
2
1
–3
–2
–1
1
2
3
4
5
6
7
8
x
= 3 cm
= 4 cm
= 15 cm
5.ofWhat is the length of the diagonal r
the box? (Hint find diagonal S first.)
A 4.7 cm
B 5 cm
C 15.8 cm
D 22 cm
6. Bill and Angie are selling gift baskets at a craft fair. Their
costs are $75 for the table and $12 per basket. They sell
each basket for $20.
Let b = baskets sold. Which inequality shows Bill and
Angie making a profit?
A
B
C
D
12b < 20b + 75
12b > 20b + 75
20b < 12b + 75
20b > 12b + 75
Two Window-Washing Companies
Company
Cost
Clean Fast
$15 plus $2 per window
See Out
$5 plus $3 per window
7. For how many windows do the two companies charge the
same amount? Write the equation and solve.
A 3 windows
B 4 windows
C
D
10 windows
15 windows
8. Which of the inequalities below
represents this situation? Carla has $90.
She makes $6 per day walking a neighbor’s
dog for half an hour, but spends $7.50 per
day on lunch. In how many days will Carla
have less than $30?
A 90 + 6x + 7.5x < 30
B 90 - 6x - 7.5x < 30
C 90 + 6x - 7.5x < 30
D 90 + 6x - 7.5x < 30
9. A 52-inch television measures 52 inches
diagonally and has a width of 20 inches. A
25- inch television measures 25 inches
diagonally and has a width of 15 inches. To
the nearest inch, how much taller is the 52inch television than the 25-inch television?
10. A twelve inch candle and an 18 inch candle are
lit at 6pm. The 12-in. candle burns 0.5 inches every
hour. The 18 inch candle burns two inches every
hour. At what time will the two candles be the same
height? Let h represent the number of
hours.
11. Lenny makes $55,000 and is
getting annual raises of $2,500. Karl
makes $62,000, with annual raises of
$2,000. How many years, x, will it take
for Lenny and Karl to make the same
salary?
12. What is the solution of the
inequality
−6x − 17 ≥ 8x + 25?
A) x ≥ 3
B) x ≤ 3
C) x ≥ −3
D) x ≤ −3