What is the zero of the function: y = 15x + 30
and describe the x-intercept in terms of the function's independent and dependent quantities.

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.