Write an equation of the parabola in intercept form that passes through (0, −18) with x-intercepts of 9 and 1.

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?

The area of a circle is equal to 1 dm². find the radius of the circle.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is