Which of the following is a monomial?
a. 2x − 1
b. 4
c. 3x + 4
d. 3x2 + 2x − 1

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period. value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.