Roberto has run 16 of the 26.2 miles in a marathon. Rounded to the nearest whole number, what percent of the marathon has he completed?

The y-intercept of a parabola is 1, and its vertex is at (1,0). What function does the graph represent

Why must x>0 for d/dx ln (x) ?

At a time denoted as t = 0 a technological innovation is introduced into a community that has a fixed population of n people.

The area of a rectangular soccer field is 5000 yd^2. The length of the field is twice the length. Find the dimensions of the field.

What is the vertex of the graph of f (x) = |x + 5| - 6?

Ron walks 0.5 mile on the track in 10 minutes. steve walks 0.25 mile on the track in 6 minutes. find the unit rate for each walker in miles per hour. who is the faster walker?

In 8 years I will be double the age I was 5 years ago

Evaluate f (x) = x^2 - 3x+2

The Greek letter that means change in

Coleen is making 30 necklaces out of leather stings. Each necklace requires 30cm of sting. How many centimeters of string does she need? If the total cost of the string was $4.41, how much did she spend per meter?