Rates of Change
Yazmine has a job putting letters in envelopes to be mailed. In 1 hours she puts 42 letters in envelopes.
Which equation best represents y, the total number of letters Natasha puts in envelopes in x hours if she continues at this rate?
The ratio of the number of almonds to the number of raisins in a bag of trail mix is 4:3. There are 600 almonds in the bag.
How many raisins are in the bag of trail mix?
450
At an assembly 7 out of 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?
490
2x-5=40
x=45/2
Ingrid has a circular garden. The diameter of the garden is 14ft. Which measrement represents the area in square feet of her garden?
153.86
A shopper pays $3.95 for 5 pounds of potatoes. What is the price per pound for potatoes?
$0.79
What is the price of a used book in the bookstore?
$6
A deck of cards contains 12 cards with letters and 16 cards with numbers. A card is pulled from the deck at random and replaced. This process is carried out 14 times.
What is the reasonable prediction for the number of times a card with a letter should be chosen?
6
x=43
Manny has to mow a circular lawn. The lawn has a 40 foot radius. Which is closest to the area of the lawn in feet?
5024
A worker uses 450 inches of steel wire to make 300 springs of the same size. At this rate how many inches of steel wire are needed to make 1 spring?
1.5 inches
A recipe for fruit salad includes 1/3 cup of grapes for 4 servings. How many cups of grapes are needed for 30 servings of this fruit salad?
2 1/2 cups
A bag contains: 5 red marbles, 6 blue marbles, 3 green marbles, 4 black marbles and 2 yellow marbles.
A marble will be drawn from the bag and replaced 100 times. What is the reasonable prediction for the number of green or black marble will be drawn?
35
4-5g>39
g < -7
If the diameter of a circular sculpture is 15 ft. Which of the following would represent the circumference of the sculpture?
47.1
Cheddar cheese costs $6 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?
The price of a sweater was reduced from $20 to $12. By what percentage was the price of the sweater reduced?
40%
Solange has three number of cubes. The faces of each number cube are numbered from 1 to 6. Solange will roll each number one time.
What is the probability that all three number cubes will land on an odd number?
1/8
What is the solution to this equation?
30.16=17.56+5x
2.52
If the radius of a circular platform is 6, what is the circumference of the platform?
37.68
Guillermo paid $105 for 6 tickers to a hockey game. Each ticket cost the same amount.
What was the cost of each ticket in dollars and cents?
$17.5
The ratio of boys to girls in Ms. Espinosa's class is 2 to 3. There are 18 girls in the class. What is the total numbers of students in Ms. Espinosa's class?
30
What is the probability Melissa will choose a purple bow?
Which equation is true when c=3?
a) 2c+8=31
b) 5(7-c)=32
c) 9-6c=0
d) 4(c+2)=20
If the diameter of a circle is 54 cm, what is the area of such circle?
2289.06 square centimeters