Sofia can type the work in 10 hours. Noga can do it in 15 hours. They work together for 4 hours. Then Sofia left and Noga finished the job. How long did it take to do the entire job?

If 84 cookies will serve 28 students how maby cookies are needed for 30 students?

Which type of deposit is paid in advance to protect landlords against nonpayment?

Your brother has saved $69 to spend on basketball cards. He plans to buy the cards at a sale. Single cards are $9, and if you buy three cards, you get a fourth for $7. if you buy five cards, the cost is $39.50.

Zack bought 7 shoes and 2 socks for $39. cody bought 5 shoes and socks for 29$.

A pipe is leaking 1.5 cups per day. About how many gallons per week is the pipe leaking?

We conduct a study to determine whether the majority of community college students plan to vote in the next presidential election. We choose a significance level of 0.05.

Francine is making a necklace that has 1 blue bead for every 6 white beads. how many white beads will she use if she uses 11 blue beads.

If one full rotation contains 360 degrees how many are in half rotation and in 3/4 of a rotation

The income distribution in a county is a normal distribution with a mean income of $10,000. The top 2.5% of the wage earners earn $18,000 or more.

Adriana writes the equation y = 2x + 4 to represent a line on a graph. Henry writes an equation that has a y-intercept that is 1 unit lower on the graph but has the same slope as Adriana's line.