1.PLSSS HELP I DONT HAVE A LOT OF TIME Pedro had $14.90 in his wallet. He spent $1.25 on a drink. How much does he have left? (a) Estimate the answer by rounding to the nearest whole numbers before subtracting. Will your estimate be high or low? Explain.

(b) Find the difference. Show your work.

14 dollars left, the answer will be high. $13.65 dollars

Step-by-step explanation:

By rounding up, 14.90 goes to 50, and by rounding down, 1.25 goes to 1. 15-1 is equal to 14, so the rounded number will be high because you are rounding up subtracting to a lower number. The second one, you do 14.90-1.25 to get 13.65

Term periodic gives the horizontal length of one cycle of a periodic function

A period T is the time that required for one complete cycle of vibration to pass a given point. As the frequency of a wave increases, the period of the wave also decreases. Frequency and Period are in relationships and can be expressed mathematically as: period equals the total time divided by the number of cycles. The distance sound travels during one period is the wavelength.

Whereas the period of a function is the horizontal length of one complete cycle. This  period may also be described as the distance from one peak to the next peak as shown in the figure below.

The duration of each cycle is the period. The frequency is the number of cycles completed in an interval of time. It is the reciprocal of the period and can be calculated with the equation .

For example the period of is

Grade:  9

Subject: mathematics

Chapter:  periodic function

Keywords: periodic,  the horizontal length, one cycle, periodic function, length