Answer:
x^2 + x = 42
Step-by-step explanation:
Let x = the number
Is means equals and sum means add
The sum of a number and its square is 42
x + x^2 = 42
Answer:
$3.30
Step-by-step explanation:
15 pencils * .22 cents. = 3 dollars and 30 cents !
For this case we must indicate the cosine of A, of the figure shown. By definition:

Substituting the values we have:

So, we have to:

Answer:
Option D