So far, 21 students signed up to go on the trip to the Math Museum. That’s only 30% of the number needed for Ms. Speth to agree to the trip. How many kids need to sign up for Ms. Speth to agree to the trip?

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get

Simplify this expression. 8x 16(x + y)