Simplify these expressions.

a. 4x + 7x + (-x)

b. - 5yz + yz + 2yz

What are the next three terms in the sequences below? 1.2, 5, 7, 12, 2.9, 11, 20, 31, 3. 2, 5, 10, 50, 4.1, 3, 3, 9,

A piggy bank contains the same number of quarters as nickels. If there are no other coins in the piggy bank, and it is worth $2.10, how many quarters are there? A. 4 B. 5 C. 6 D. 7

The length of a rectangle is 9.7 cm more than 4 times the width. If the perimeter of the rectangle is 91.4 cm, what are its dimensions? show your work

A plumber charges a vist fee of $25 plus $10 for every hour he spends repairing. Write an equation in slope intercept

Lee split all of his seashells evenly between 7 containers. There are a few left over and he gave those to his brother. He had 265 shells in all. How many shells did his brother get?

Edward's recipe for salad calls for 3 3/4 cups of lettuce and 1/2 lb of tomatoes. Determine how many cups of lettuce Edward would need to mix with 1 lb of tomatoes. Show your work.

Kia purchased 3 pounds of grapes and spent $11.63 on other items. She spent a total of $20. She used the following steps to find the cost of each pound of grapes. When Kia subtracts 11.63 from both sides, what does the difference represent?

A line passes through the origin and has a slope of - 3/2. Through which quadrants does the line pass?

How do I make an algebraic formula for a number that's increasing by 74%? Starting number: 93.13, I need a formula to go up by 74% 100 times.

The next number in the sequence - 5,-2,4,13 is 25. Is this conjecture ruse or false? A. False B. Not enough info provided. C. True