The cost of posting one inland letter is 5k and one overseas letter is 10k. A
messenger spent #1.20 in posting 4
overseas letters and some inland
letters. How many inland letters did
he post?​

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

If a is a nonzero real number then the reciprocal of a is