Need help!! Suzan has a $30 credit on an online music site. for each MP3 she downloads , $1 is subtracted from her credit. The function f(x)=30-x models the amount of credit remaining after x downloads. What would be a reasonable domain and range for this function?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?