the sum of a number and 3 more than twice the number is less than 36 find that number UGH MATH HELP PEOPLE

What is the inverse of the function f(x)=4x+8

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way