suppose a 5 minute overseas call casts $5.91 and a 10 minute call casts $10.86. the cost of the call and the length of the call are related. How long can you talk on the phone if you have a $20 bill

Melissa has a student dictionary on her desk. Her dictionary contains 86 pages. In this dictionary, more words start with the letter "S" than any other letter, occupying 15 full pages.

Factor completely 4x2 + 16x. 4 (x2 + 4x) x (4x + 16) 4x (x + 4) Prime

Richard walks every day for exercise at a rate of 1 kilometer every 12 minutes Part A At this rate, how many meters can Richard walk in 1 hour? Explain how you found your answer. Part B Suppose Richard walks 1 kilometer every 10 minutes.

Solve linear inequality in one varible? 7x+12>5

Solve for R: (1/R) = (1/r) + (1/r) 1 2

Find the half-life for these exponential decay models. (no decimal places) tritium, which decays at a rate of 5.471% per year. years einsteinium-253,

Rewrite as a simplified fraction, 0.16 the 6 is repeating

A steamboat can travel at an average speed of 11 miles per hour in still water. Traveling with the current the steamboat can travel 77 miles down the river in the same amount of time it takes to travel 44 miles upstream against the current.

The sales tax rate is 6%. If c represents the cost of an item and s represents the amount of sales tax, which of the following equations represents the relationship between c and s?

On a farm, there are some cows and chickens. If the animals have a total of 40 heads and 112 legs, how many cows are there?