Is the place value method the expanded notation method and the algebraic notation method of multiplying a 1 digit number by 2 digit number the same

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

The radius of a sphere is 3 inches. which represents the volume of the sphere?