⚠️⚠️ help I don’t understand ⚠️⚠️

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function