For 4-7 write proportions (solve if wanted), for 8-21 solve (must solve) Please help! This is due at 10:00 a. m. 12/16/21 for math class, and I dont know how to do it, since I was sick when the teacher explained it T_T

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer