0.7-b=1.7b+3.4 what would my answer be

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)