MediumMath· Problem-Solving and Data Analysis· Probability and conditional probability· MCQfigure
If 1,200 customers register for new accounts at a social media website every day, what fraction of the first 60,000 new accounts are registered in the first 5 days?
EasyMath· Advanced Math· Nonlinear equations in one variable and systems of equations in two variables· MCQfigure
The power P produced by a machine is represented by the equation above, where W is the work performed during an amount of time t. Which of the following correctly expresses W in terms of P and t ?
A rubber ball bounces upward one-half the height that it falls each time it hits the ground. If the ball was originally dropped from a distance of 20.0 feet above the ground, what was its maximum height above the ground, in feet, between the third and fourth time it hit the ground?
HardMath· Advanced Math· Nonlinear equations in one variable and systems of equations in two variables· MCQfigure
The formula above can be used to approximate the dew point D, in degrees Fahrenheit, given the temperature T, in degrees Fahrenheit, and the relative humidity of H percent, where . Which of the following expresses the relative humidity in terms of the temperature and the dew point?
EasyMath· Algebra· Linear inequalities in one or two variables· MCQfigure
Normal body temperature for an adult is between and , inclusive. If Kevin, an adult male, has a body temperature that is considered to be normal, which of the following could be his body temperature?
EasyMath· Algebra· Linear equations in two variables· MCQfigure
A city is planning to build a rock retaining wall, a monument, and a garden in a park. The table above shows four rock types that will be considered for use in the project. Also shown for each rock type is its weight per volume, in pounds per cubic foot (lb/ft3), and the cost per pound, in dollars. The equation gives the total cost, in dollars, of the rocks used in the project in terms of the number of ft3 of limestone, w, and the number of ft3 of basalt, z. All four rock types are used in the project. Which of the following is the best interpretation of 3,385.80 in this context?
The quadratic function graphed above models a particular measure of plant diversity as a function of the elevation in a region of Switzerland. According to the model, which of the following is closest to the elevation, in meters, at which plant diversity is greatest?
EasyMath· Algebra· Systems of two linear equations in two variables· MCQfigure
A dance teacher ordered outfits for students for a dance recital. Outfits for boys cost $26, and outfits for girls cost $35. The dance teacher ordered a total of 28 outfits and spent $881. If b represents the number of outfits the dance teacher ordered for boys and g represents the number of outfits the dance teacher ordered for girls, which of the following systems of equations can be solved to find b and g ?
EasyMath· Algebra· Linear inequalities in one or two variables· MCQfigure
A clothing store is having a sale on shirts and pants. During the sale, the cost of each shirt is $15 and the cost of each pair of pants is $25. Geoff can spend at most $120 at the store. If Geoff buys s shirts and p pairs of pants, which of the following must be true?