The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes

3 divided by 4 equals (x-9) divides by 16

T times 3/4 for t = 8/9

dentify the type of sampling used. Thirty-five math majors, 52 music majors and 67 history majors are randomly selected from 444 math majors, 381 music majors and 414 history majors at the state university. What sampling technique is used?

Find the differential dy for y = cos (pix) and evaluate it x=1/3 and dx=-.02 and round your results to 3 decimal places.

The side of a square is 12ft what is the area of the square

32 feet is what percent of 244 feet?

A restaurant served 85 halves of cantaloupe during a busy weekend. How many whole cantaloupes is this?

Erik's disabled sailboat is floating stationary 3 miles east and 2 miles north of Kingston. A ferry leaves Kingston heading toward Edmonds at 12 mph. Edmonds is 6 miles due east of Kingston. After 20 minutes, the ferry turns, heading due south.

Which of the following could be the measures of the three angles of an acute triangle? ... A ... 40°, 40°, 100° ... B ... 30°, 60°, 90° ... C ... 50°, 55°, 75° ... D ... 30°, 30°, 120°

Li rolls a 1-6 number cube and flips a coin. What is the probability that he rolls an en odd number and flips tails?