Simplify the expression:
2(x-6)+2(8)
2x+4
Sylvie needs $110 for a concert ticket. She already has $16 and she earns $10 an hour. Write an equation to represent how many hours she will need to work to make $110.
110 = 16 + 10h
y = 3x + 4
Out of 25 respondents in a survey, 10 ride the bus t school. Out of the total population of 150, how many would be expected to ride the bus?
60
What are two cross sections of a pyramid?
rectangle and triangle
Joseph has $60 in a savings account. Each week he deposits $12 in the account. Write an expression to represent the total amount in the account after x weeks.
60+12x
On a road trip, a family drives 350 miles per day. How many days, d, must they travel to reach a distance of more than 1,400 miles?
350d > 1,400
d>4
What is the slope and y-intercept of the following equation;
y= -2.5x - 2
Slope: -2.5
Y-intercept: -2
Abby surveys every 25th student from an alphabetized list. Is this a random sample?
Yes!
A drawing of a triangle has a base of 6 inches and a height of 8 inches. The drawing is at a scale of 2in = 9ft. What are the actual base and height of the triangle?
27ft and 36 ft
Factor the expression:
30b-6c
6(5b-c)
How do you graph the inequality x > 12 on number line?
Put an open circle on 12 and draw a solid arrow to the right (greater numbers)
What is a solution to the equation:
-2.5(x - 4) = -3x + 4
X = -12
What are two measures of center?
Mean and median
X=30
2x+19
Solve the equation 4.25x+7=53.75.
X=11
How many solutions does the equation have:
3(4x-1) = 8x-2
Infinitely many
What is the mean of the following data set?
4.9, 4.7, 5, 4.6, 4.8
4.8
What is the volume of a rectangular prism with side lengths of 6in, 5in, and 2in?
60in3
There are 10x-8 customers in a store on Monday and 6x+16 customers on Tuesday. What is the total number of customers for the two days?
16x+8
Solve the inequality:
16x - 33x < 37x + 27
X > -0.5
How would you graph the equation y=2x + 4?
Start at the y-intercept of 4. Then use the slope (2) to go up 2, right 1.
Group B plants grow better than group A plants
What is the circumference and area of a circle with a diameter of 4in? Use 3.14 for pi.
C=12.56in
A=12.46in2