200 ones into standard form

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Acarton of juice contains 64 ounces miss wilson bought six cartons of juice how many ounces of juice did she buy