Sophie has $4.20 worth of dimes and quarters. She has twice as many quarters as
dimes. Write a system of equations that could be used to determine the number of
dimes and the number of quarters that Sophie has. Define the variables that you use
to write the system.

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?