Isabella correctly answered 18 of the questions on a history test. This represented 90% of the total questions. What was the total number of questions on the history test?

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?

What’s the answer? and how do i solve it ?