The 888 mile trip to the ranch took three times as long as the 280 mile trip to the ocean because the speed was 4 mph less than the speed to the ranch. what were the speed and time for each trip?will give brainliest out right away

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Simply 8x squared + 5(7x squared- x) - 2x =