A balloonist sees the rockets go by 4 seconds after it leaves the ground how high is the balloonist from the ground when he sees the rocket

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

Solving algebraic equations 2m+3=11