Russell sold 40 shares of a stock. The value of each share has decreased by $1 since he bought the stock. Express the amount Russell gained or lost as an integer.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

Apossible wavelength for the color blue is 0.000000492 meter. which of the following is a reasonable estimate for this wavelength for the color blue? a. 5 × 10-6 m b. 5 × 107 m c. 5 × 10-7 m d. 5 × 106 m