If i invest $3600 at an interest rate of 4% per year, and contribute an additional $30 per month, how much will i have in 5 years?

For the equations below which statement is true ? -2x=14 6x=-42

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?