In the United States in 1990, about one person in 20 was 75 years old or older. Write this fraction as a percent

Forrest has pennies, nickels, dimes, and quarters in a cookie jar - a total of 201 coins. He has twice as many nickels as dimes and four times as many pennies as quarters. If he has $12.10 in coins, how many of each type does he have.

A deli sells ham for $2.98 per half pound. Kyle incorrectly says that the unit rate is $1.49 per pound. Explain Kyle's mistake and determine the correct price per pound. Show your work.

Divide. Write the quotient in lowest terms. 1/4 : 1 1/8

Students hike 16,900 feet one morning and 14,850 feet in the afternoon. Estimate the total number of miles they hiked that day. Explain.

A rectangular floor is 12 feet wide and 18 feet long. How much will it cost to carpet the floor if the carpet cost $1.39 per square foot?

What can each term of the equation be multiplied by to eliminate the fractions before solving

Find the missing number in the following pattern explain your reason 12,24, 72, and 288,

How to find the Base and height of the triangle

Lita estimates she will read 24 books during the summer. She actually reads 9 books. what is the percent error of her estimate?

We mathematical induction to prove the statement is true for all positive integers n. 8+16+24 + ... + 8n=4n (n+1)