Is 7z+6z simplified or not simplified

Of the 800 people at the concert, 42% of them are teenagers. How many teenagers are at the concert?

gail works for a vending company. she gets paid $64 per week plus 20% of her total salesm how much will her total sales for the week have to be in order for gail to make at least $200.

Emma, Brandy, and Damien will cut a rope that is 29.8 feet long into 3 jump ropes. Each of the 3 jump ropes will be the same length. Write a division sentence using compatable numbers to estimate the length of each rope.

How much would 200 invested at 5 invested compounded continuously be worth after 9 years

Write a system of linear equations in two variables whose solution satisfies the problem. Then solve it symbolically and graphically. 1400 concert tickets were sold for the Fairmont Summer Jazz Festival.

9) Beth and Pranav each improved their yards by planting hostas and shrubs. They bought their supplies from the same store. Beth spent $78 on 6 hostas and 14 shrubs. Pranav spent $75 on 10 hostas and 5 shrubs.

A Potter uses three fifths of a pound of clay to make a bowl how many bowls could the potter make from 10 pounds of clay

A textbook costs $108.00. If Matthew paid a total of $113.94 for the book and sales tax, what rate of sales tax was he charged?

3A to the 4th power b to the - 2 power and c to the 3rd power

How do you change 4/8 to an decimal?