The average annual rainfall in california is 0.564 of a meter per year. what is the value of the digit 4 in that number?

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost