3x − 2 = 3x + 5? a zero b one c two d infinite

If 20% of a number is 35, what is 50% of that number?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?