Twice the sum of a number and negative two is sixteen. find the number

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Which of the following circles have their centers on the x-axis? check all that apply.