Speed cell wireless offers a plan of $40 for the first 400 minutes, and an additional $0.50 for every minute over 400. Let t represent the total talk time in minutes. Write a piecewise-defined function to represent the cost C (t)

A manufacturer designs a circular ornament with lines of glitter as shown. Identify m∠PSR. m=60 m=30 m=90 m=120

The following is a geometric sequence. Find the next number in this sequence. 1, - 2, 4

Round to the nearest whole number 486.3:8.1

Here are advertised horsepower ratings and expected gas mileage for several 2007 vehicles as reported by Kelly Blue Book Vehicle Horsepower Gas Mileage (MPG) Audi A4 200 BMW 328 1230 Buick LaCrosse 200 Chevy Cobalt Chevy TrailBlazer 291 Ford

What is the theoretical probability that a coin toss results in two heads showing? i had to flip it 100 times and it showed up 27 times

Write a repeating decimal as a fraction in simplest form.

Edin has £300 in his savings account. His bank offers him a fixed 5% simple interest rate per annum, for a period of 3 years. How much interest will he have earnt after 3 years?

He is driving a truck traveling 45 mph and Adriana is riding a train traveling 60 mph. They both cover the same distance, and Jayden travels 2 hours longer than Adriana. How many hours did each person travel?

Explain how using equivalent ratios is like adding fractions with unlike denominators

A van has 6 students and 2 teachers how many vans are needed for a total of 48 students and 16 teachers