Pls answer the questions on here pls

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

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?

What type of symmetry does a rhombus have?