Triangle ABC is dilated by a scale factor of 2 with a center of dilation at the origin. Finish the rule for this dilation.

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.