PLE HELP ME I WILL FAIL

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.