Related rates problem

Find the rate of change of the area of A when h=3, if h is decreasing at a rate of 0.5 units/sec. Write answer in simplified fraction or expression.

The verbal translation for the difference of m and 7 increased by 15

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.