 # Recent questions in Exponential models

Recent questions in Exponential models Tyra 2021-09-27 Answered

### Choose the correct letter. Which of the following functions models exponential decay? A. $$f(x)=12*3^x$$ B. $$y=2*0.8^x$$ C. $$y=-3x^2$$ D. $$f(x)=1.8^x$$ ossidianaZ 2021-09-26 Answered

### Determine whether a linear, quadratic, or exponential function best models the data. Then, use regression to find the function that models the data. $$\begin{array}{|c|c|} \hline x&0&1&2&3&4\\ \hline y&10089&578&968&457&8\\ \hline \end{array}$$ aortiH 2021-09-24 Answered

### Enter the data for Spendco into your graphing calculator. Enter the years since 2000 as the x-values and the corresponding daily hits in thousands as the y-values. a. To find the exponential equation that models the data, use the exponential regression feature of your calculator. The calculator should return values for a and b. Write these values below, rounding to the nearest hundredth. a= b. Write the exponential equation in the form $$\displaystyle{y}={a}{b}^{{x}}$$. c. Use the exponential equation to predict the number of daily hits for Spendco in 2015. CoormaBak9 2021-09-18 Answered

### Show that an exponential model fits the data. Then write a recursive rule that models the data. \begin{array}{|l|l|l|l|l|l|l|} \hline n & 0 & 1 & 2 & 3 & 4 & 5 \ \hline f(n) & 2 & 6 & 18 & 54 & 162 & 486 \ \hline \end{array} Khadija Wells 2021-09-18 Answered

### Show that an exponential model fits the data. Then write a recursive rule that models the data. n 0 1 2 3 4 5 f(n)162 54 18 6 2 2/3 ​ BolkowN 2021-09-17 Answered

### A computer valued at $1500 loses 20% of its value each year. a. Write a function rule that models the value of the computer. b. Find the value of the computer after 3 yr. c. In how many years will the value of the computer be less than$500? Remember the general form of an exponential function: f(x)=a*b^x. Given your table and situation, determine values for a and b. Write the appropriate exponential function. preprekomW 2021-09-17 Answered

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