Answer:
4
Step-by-step explanation:
25 - 3(7) .... Plug in 7
25 - 21 .... Multiply 3 and 7
4 ..... Answer
Hope this helps!

<em>For another information, when D > 0, there are 2 real roots.</em>
<em>When D = 0, there is only one real root.</em>
<em>And when D < 0, there are no real roots (also known as imaginary.)</em>
Answer:
75 points
Step-by-step explanation:
45÷60%×100%=75 points in total
Answer:

Given:
5 pounds rice cost $2.49
To Find:
Cost of 9 pounds rice
Step-by-step explanation:
5 pounds rice cost $2.49
1 pound rice will cost $ 
So,
9 pounds rice cost = 1 pound rice cost × 9
= $
= $0.498 × 9
= $4.482