Lucy's penny bank is 1/2 full. After she adds 200 pennies, it is 7/10 full. How many pennies can Lucy's bank hold?

Covert 261,000,000,000 to scientific notation

In Las Vegas, the hottest recorded temperature is 47ËšC, and the lowest recorded temperature is - 13ËšC. What is the difference between the city's highest and lowest recorded temperatures?

An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. using the sample space provided below and assuming each simple event is as likely as any other, find the probability that the sum of the dots is 88.

What are the solutions to the following system of equations? y = x2 + 3x - 7 3x - y = - 2

How many positive integers are factors of 120 and also factors of 40?

Todd ran 8 laps around a 400-meter track on monday, 4laps on tuesday, 8 laps on wednesday, 4 laps on thursday, and 8laps on friday. how many kilometers did he run?

Amanda found that the equation 10x+5y=20 in the "Linear Equations" chapter of her math book What is an equation that can be written with Amanda's equation to for a pair of linear equations such that the system of equations has exactly one solution?

Solve for x. (x+8) ^2=x^2+4x+16

On Tuesday, Frankie had $154.50 in his bank account. On Wednesday, he withdrew $65.50 from his account. After depositing $275.25 on Friday, how much money did Frankie have in his account? A. $55.25 B. $186.25 C. $364.25 D. $495.25

Sue now has $320. how much would she have after 8 years if she leaves it invested at 8.5% with annual compounding?