I need help with these 4 problems and I would like a very detailed explanation on how to solve each one and where I can read the explanation clearly. As long as I can have this before tomorrow, I don't mind waiting for the feedback.

Find the equation of the line using the point-slope formula. Write the final equation using slope-intercept form. perpendicular to 7y = x - 4 and passes through the point (-2, 1) Enter the exact answer. y= https://snhu.mobius.cloud/contentmanager/AssignmentList.do 7/9 9/22/2020 Question 18: (2 points) The cost of renting a car is $43/week plus $0.25/mile traveled during that week. An equation to represent the cost would be y = 43 + 0.25:, where a is the number of miles traveled. a. What is your cost if you travel 50 miles? The cost is $ b. If your cost was $62.75, how many miles were you charged for traveling? You were charged for traveling miles. c. Suppose you have a maximum of $100 to spend for the car rental. What would be the maximum number of miles you could travel? The maximum number of miles you could travel is miles.Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 2 more than 3 times the number of marbles Mark has, how many does each boy have to sell if the total number of marbles is 90? Mark has marbles to sell. Don has marbles to sell. Show your work and explain how you arrived at your answers. There are sample student explanations in the feedback to questions 1, 3, 5, 9, 11, and 20 that show the level of detail that is expected in your explanations. https://snhu.mobius.cloud/contentmanager/AssignmentList.do 8/9 9/22/2020 Question 20: (3 points) Ben starts walking along a path at 2 mi/h. One and a half hours after Ben leaves, his sister Amanda begins jogging along the same path at 6 mi/h. How long (in hours) will it be before Amanda catches up to Ben? Enter the exact answer. Hint: The distance formula is that distance = rate * time, so for example in one and a half hours, Ben has walked 2 * 1.5 miles. Amanda catches up to Ben in hours