Determine which of the following expressions requires combining like terms before it is considered to be in its simplest form. Select all situations that apply.

4x + 3y - 7x

a2 + a2 - b

5y - x

a2 + a2b

-5w2 + y - 4w2 - 8y

Add 21 1/2 in. 10 9/16 in.

About travels 16 miles due north in two hours and 24 miles due west in two hours. what is the average speed of the boat?

Write an expression for the number of yards in f feet

The sum of five times h and twice g is equal to 23. Translate sentence into an equation

How do I use the distributive property to express 15+45

5y - 3z + 4y - 1z - 3y; y = 3 and z = - 2

An architect represents a 9 inch height as inch on a scale drawing. Which of the following scales did the architect use? 1 foot = inch 1 foot = inch 1 foot = inch 1 foot = inch

86% of senators support a bill. What fraction of senators support the bill?

Lettuce is packaged in four bags to a box. if there are 3.5 boxes of lettuce in a cooler, how many bags of lettuce would there be?

Christy drove 300 miles on her vacation. she drove an average of 1.25 times faster on the secont 150 miles of the trip than she did on the first 150 miles. what expression represents the time she spent driving? let x=her speed on the first half