For numbers 10-13, write an equation that represents the proportional relationship between total cost (c) and the number of items a person might buy (x), using the store that offers the best price. where would you buy each item? keep in mind that an equation allows someone to calculate the total cost of a particular grocery item no matter how many of that item is purchased. hint: the cost equation should have the variable ‘c’ and ‘x’ in it. 10a. which store has the best priced smooth cola 12-pack? * 1 point a) store 1 b) store 2

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d. what is the height of the tide after 93 hours?