Select the equation that represents the question. 20% of 150 is what number?
a=0.2 x 150
0.2 = 150 x a
0.2 = a X 150
150 = a × 0.2
Solve the equation.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

In the geometric progression –3, 12, −48… what term is 3,072?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn