What is the value of x?

(Hint: 3x + 6 + 48 = 90, and solve)

Uanita borrowed $600 to purchase a new computer. she was charged 7% interest for two years. she used the simple interest formula to find the interest. i = 600(7)(2) what error did juanita make and how will her error affect the interest she calculates? explain.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.