Explain how you would estimate to subtract 189 from 643

Solve the equation 4n-7=-23

A recipe calls for 3 ounces of flour for every 2 ounces

Anna gets paid $8.75 / hour working as a barista at Coffee Break. Her boss pays her $9.00/hour for creating the weekly advertisement signs. She works a total of 25 hours each week. Let x represent the hours that Anna works each week as a barista.

If y=204 when x=34 what is y when x=26

What quadratic has roots of x=8 and x = - 5

The circumference of a circle is 11 pie inches. What is the area of the circle? Leaving your answers in terms of pie.

The total number of human genomic characters is 3.5 billion. Express this quantity numerically without using a decimal

Erin has $50. she wants to purchase a cell phone ($20) and spend the rest on music and CDs. Each music CD costs $8. write an inequality for the number of music CDs she can purchase.

One number is three less than four times another. If their difference is 48, what is the larger number?

0.75 gallons in decimal form