The Earth is said to be 4,540,000,000 years old.

Estimate the age of the earth by writing it in the form

of a single digit times an integer power of 10.

Solve 4x2-25=0 by finding square roots

Write an inequality that represents the following phrase: 5 multiplied by the sum of x and 2 is at most 30

Round 14.57 to the nearest whole number.

What is 1.6k = 3.2 show your work

2. Which is the largest of these fractions? A. 7/15 B. 4/9 C. 6/11

What is 2 3/5 + 1 3/5

Credit card A has an APR of 15.8% and an annual fee of $72, while credit card b has an Apr of 19.6% and no annual fee.

At another school they sell a different brand of gift wrap which costs $2 per package and cards for $5 per package. Your friends class sells 220 packages and earns a total of $695.

A publisher prints 1,912 copies of a book in each print run. If they print 305 runs, the manager wants to know about how many books will be printed. What is a reasonable estimate?

On Saturday, you catch insects for your science class. Five of the insects escape. The remaining insects are divided into three groups to share in class. Each group has nine insects. How many insects did you catch on Saturday?