*PLEASE ANSWER QUICK*
The normal monthly temperatures (°F) for Omaha, Nebraska, are recorded below.

-write a sinusoidal function that models Omaha’s monthly temperature variation
-use the model to estimate the normal temperature during the month of April.

1). A. Y=28 cod ( pi/6t- -7pi/6)+49
B y(4)= 49 °

2). A. Y=49 cos( pi/6t- 7pi/6) +28
B y(4)=56°

3). A. Y=28 sin(pi\6t- 7pi/6) +49
B. Y(4)=49°

4). A. Y=28 cos(pi/12t + 7pi/12)+49
B. Y(4)=49°

The variable in a relation who’s value depends on the value of the independent variable is called what?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?