The average distance from mars to the sun is about one hundred forty-one million , six hundred twenty thousand miles. how do you write the number that shows this distance in standard form?

For each proportion find the unknown number x 1/5/8=×/15

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

X+y=-4 x-y=2 use elimination with adding and subtraction