Solve for proportion

8/13= v/21

please and thanks :)

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

Interpret the following expression (5y^2-7)^3/(2y)^2