7. What is a constant of proportionality? The interval through which a variable changes with respect to time.

The unit rate between two quantities that are directly proportional.

The relationship between two quantities where the ratio comparing them is always

constant.

The ratio between two quanitites simplified sohat the denominator is one.

Evaluate the expression for the given value of the variable 7a - 4a for a =8

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?

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet