What is the slope of a line that is perpendicular to
y=2x+1
-1/2
What is the equation a line in slope intercept form?
y = mx + b
If an object takes 10 minutes to go 3 miles, how fast is the object going in mph?
18 mph
Which letter represents the total number of soccer players that use steroids?
F
What kind of correlation is shown in the following scatter plot?
The average (arithmetic mean) of m, n and p is 8. If m + n = 15 then p equals:
9
If f(x)=(x^3-2x^2+3x+1)/x what is f(-1)?
5
Simplify the following:
x2(x3)2 =
x8
Line J has a y-intercept of 6 and passes through the point (a, b). Find the slope of line J.
(b-6)/a
A mile is 5280 feet
Susan is able to walk a fast pace of 4 miles per hour. How many feet will she walk in 40 minutes?
14080
Kevin is selling cups of lemonade to raise money to buy a bike. If he sells each cup for $0.50, what is the maximum amount of money he made on a single day this week?
$11
The given scatterplot shows cricket chirp counts at 16 temperatures. Based on the line of best fit, approximately how many chirp counts would there at 32 degrees Celsius?
85
A class has test results of 98, 86, 72, 88, and 92. What score does Angie have to get on the test in order to make the average a 85?
74
If f(x) = x2 - x
Find f(9) - f(7)
30
Subtract the complex conjugate from:
3/2+1/4i
1/2i
Line A is represented by y = 3x - 4. Find the equation of a line perpendicular to line A and goes through the point (1, 2).
y=-1/3x+7/3
Two cars were traveling 630 miles. Car A traveled an average speed of 70 miles per hour. If car B traveled 90 miles an hour, how many miles had car A traveled when car B arrived at the destination?
490
What was Kevins percent increase in sales from Tuesday to Thursday?
about 144%
Given this scatter plot what kind of correlation does it show?
Parabolic Correlation
The average for 24 students on a test is 81%. Two more students take the test, averaging 74% between the two of them. What is the total class average (to the closest hundreth) if these two students are added to the 24?
80.46%
If f(x) = x2 - 1 What is f(f(3))
63
Solve the following for x:
64x2 + 24x - 10 = 0
x = 1/4
In the coordinate plane, Line A has a slope of -1 and an x-intercept of 1. Line B has a slope of 2 and a y-intercept of -2. If the two lines intersect at the point (a,b), what is the sum a+b?
1
Mary can make 20 snowballs in an hour. Mark can make 15 snowballs in 30 minutes. If they work together, how long will it take them to make 150 snowballs?
3 hours
The graph above displays the charge “C” in dollars of riding a taxi for “M” miles.
According to the graph, what does the C-intercept represent?
Initial fee of the taxi.
The equation of the line of best fit is y = 0.961x + 40 What is the predicted y value if the volume of caster oil is 10 cm3?
49.61
If x is the average (arithmetic mean) of r and 11, y is the average of 3r and 19, and z is the average of 5r and 20, what is the average of x, y, and z in terms of r?
3/2 r + 8
If f(x)=x/(1-x) for what value of x does f(x) = 2/3
2/5
Give the equation for the line of symmetry of the parabola with the equation. f(x) = 3x^2-9x+16
x=3/2
What is the area of the triangle formed by the lines
y=-2x-2, y=-1/2x+8, and y=0
45
Ruby drives to her grandmother's house and back. On the way there, she travels at an average speed of 40 miles per hour. On the way back, she travels at an average speed of 60 miles per hour. What is Ruby's average speed for the entire round trip?
48
Of the freshmen who have declared a major, approximately what percent have chosen a major in the sciences?
52%
The given scatterplot shows house prices per square foot. If f represents the number of square feet and p represents the house price in dollars, write an equation of the line of best fit. Use the points (1,000, 160) and (2,500, 400).
y=0.16x
A, B, C, D, and E are integers such that A < B < C < D < E. If B is the average of A and C, and D is the average of C and E, what is the average of B and D?
(A+2C+E)/4
The function f(t) is defined as f(t)=(t-4)^2(t-7) if f(x+2)= 0 what are the two possible values of x?
2 or 5