A small square has sides 7.5 inches and a large square has sides of 15 inches. What is the scale factor?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document