By what number would you need to dilate the triangle to obtain a triangle with four times as great of an area as the original triangle

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units