Mr cho has twice as many dollar bills as quarters. his money in dollar bills and quarters totals $15.75. how many of each does he have?

Michaela is an athlete who has been training for several years only in Denver. She had an annual physical, and the doctor read her hematocrit as 59%. What could this reading potentially tell the doctor?

Write each number in standards form 7+0.6+0.05+0.007+0.0001+0.00003

Melinda purchased 3 blank cassette tapes and 5 blank videotapes for a total of $22.10 not including tax. if each videotape cost twice the price of cassette tape, what did Melinda pay for 1 videotape?

What is the surface area in square centimeters of the cube with all sides 9 cm

How many different ways could five distinct days of the week be chosen so that at least one of them begins with the letter upper t ?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.