A while ago, Lindsey bought shares of stock in a high-tech firm. At that time, the selling price was $5 per share. According to today's newspaper, a share is currently worth 80% less. What is the current value of one share? ​

Which functions shave a maximum and are transformed to the left and down of the parent function ,check all that apply f(x) = x2? p(x) =14 (x+7)2 + 1

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)