If a1=7 and an= 3an-1 + 4 then find the value of a4.

What is the solution of the systems of equations? y=2/3x+3 x=-2

One positive number is 9 more than twice another. if their product is 95, find the numbers

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points