What does "cross the line, change the sign" means.

shelly wants to earn at least $500 this week. she made $45 babysitting and earns $12.50 per hour at a grocery store. How many hours does she need to work at the grocery store to meet her goal?

A rectangular blacktop with a length of 5 x and a width of 3x question and answer

Simplify the following expression 9v^2 (v^2+3v-4)

22) A square and rectangle have equal areas. The length of the rectangle is five inches more than twice the side of the square. The width of the rectangle is 6 inches less than the side of the square. Find the length of the side of the square.

What is the simplest form of this expression y (-6y^3-8) + y^4

35 divided by 97.3 =

What is 4.3547 rounded to the nearest thousand

Joe's vehicle traveled 330 miles on 15 gallons of gasoline. Mike's vehicle traveled 360 miles on 18 gallons of gasoline. Which sentence correctly compares the miles per gallon traveled by these vehicles?

Simplify 9am2-m2/m2-2am-3a2

Select all irrational numbers. √4 √8 √10 √15 √35