If two lines are perpendicular to each other, do they lie in the same plane?

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?

Write as a product of two polynomials. 2(3–b)+5(b–3)^2