hector is buying books at a book store hue buys 2 used books and 1 new book for 26 dollars. the new book costs 18 dollars. each used book costs the same amount. what is the price of each used book?

Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 600 and a standard deviation of 120. Use the 68 dash 95 dash 99.7 Rule to find the percentage of people taking the test who score between 240 and 960.

A chess player won 72 of the games he played. If his ratio of wins to loses was 9:4, how many games did he play total?

Im really confused on this one

Zhang Li solves the equation below by first squaring both sides of the equation. - 4=/sqrt{5z+7}-4 = 5z+7 minus, 4, equals, square root of, 5, z, plus, 7, end square root What extraneous solution does Zhang Li obtain?

You are driving to a vacation spot that is 1500 miles away. Including rest spots, it takes you 42 hours to get to the the vacation spot

Lisa sold $75 worth of play tickets. Adult tickets cost $4 each and children tickets cost $3 each. How many children's tickets could she have sold? is there more than one answer

Your brothers hourly wage is 4/5 of your sisters hourly wage. if your brother earns $10 per hour, what does your sister earn?

Jamal decides he wants to shop around for the best price for purchasing an advertisement space in a newspaper. One of the companies he contacts charges $2.00 for each line in the advertisement and an initial fee.

How does adding with decimals compare to adding whole numbers?

Scorpion was walking down the street he had 2 swords on his back but while he was walking Sub-Zero jumped on the back and took Scorpions sword while Sub-Zero already had 1 sword now how many swords does Sub-Zero have?