7th Spiral A
−1 1/5 ÷ −1 5/6
36/55
Delsym Middle School has 1,800 students. A random sample of 80 shows that 24 have cell phones. Predict the number of students in the school who have cell phones.
540 students
Are the lines y = − 2 and x = 2 perpendicular? Justify your answer.
Yes; y = -2 is a vertical line and x = 2 is a horizontal line
Which number is greater?
9 3/4 OR √96
√96
The circumference of the circular table on Beverly’s porch is 72π inches. What is the radius of the table?
36
Alison knits 1/10 of a scarf in 4/5 of an hour. What fraction of a scarf can Alison knit in 1 hour?
1/8
The table shows the cost y (in dollars) of bowling x games. How much does it costs to bowl 3 games?
$21
Middletown Savings Bank starts the day with 2.93 × 104 dollars in the vault. At the end of the day, the vault has 3.5 × 105. How much more money is in the vault at the end of the day than there was in the morning?
3.207 × 105 more dollars
Megan uses 2/3 cup of almonds to make 4 cups of trail mix. Using this same proportion, how many cups of almonds would Megan need to make 9 cups of trail mix?
1 1/2 cups
Two years of local Internet service costs $685, including the installation fee of $85. What is the monthly fee?
$25 per month
The area of a square court is 50 square feet. Estimate the side length s to the nearest tenth of a foot.
7.1 feet
Find the volume of the cylinder. Round your answer to the nearest tenth.
169.6 cubic meters
Keith paid a total of $48 for 4 movie tickets. He used a coupon for $4 off the entire order. The equation below can be used to determine the regular price of 1 movie ticket, t.
4t – 4 = 48
What is the regular price of 1 movie ticket?
$13
The low point of the Tonga Trench, in the Pacific Ocean, is −10,630 meters. The low point of the Mariana Trench, also in the Pacific Ocean, is 890 meters lower. What is the depth of the Mariana Trench?
-11520 meters
The sum of the interior angle measures in a regular polygon is 3240°. What is the measure of one of the interior angles of the polygon?
162 degrees
Kelly and Mohammed race each other. Kelly gives Mohammed a 40-foot head start. The distance y (in feet) Mohammed runs after x seconds is represented by the linear function y = 12x + 40. The table shows the distances Kelly runs. Who runs at a faster rate? What is that rate?
Kelly; 15 feet per second
Ronda recorded the colors of the last 250 cars driving by her house in the table below. Using the data, what is the probability that the next car to drive by will be red or blue?
12/25 or 48%
Lei is painting the outside of a jewelry box that is in the shape of a rectangular prism. Its length is 18cm, its width is 6cm, and its height is 3cm. What is the surface area of the jewelry box in square centimeters?
360
The line plot shows the low temperatures for various days through the winter. Describe the shape of the distribution. Identify any clusters, gaps, peaks, or outliers.
The distribution is symmetric. There is a cluster from 18 to 22, no gaps, a peak at 20, and no outliers.
Donovan asks the 460 students in the 7th and 8th grade whether they prefer pizza or hamburgers for lunch. Of the 7th graders 215, prefer pizza and 35 prefer hamburgers. Of the 8th graders, 22 prefer pizza and 188 prefer hamburgers. Complete the table to show this data set.
Pizza Hamburger
Grade 7 215 35
Grade 8 22 166