Select the quadratic function in the form f (x) = ax^2+ bx + c with a axis of symmetry at x = 1/4 and a y -intercept at (0,-2).

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?