How do you write the following expanded number in standard notation?
10,000,000 + 500,000 + 3,000 + 90 + 7

10,503,970
10,503,097
1,503,097
10,053,097

Which expression is equivalent to 5r6141 2r+st6

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.