Which ordered pair in the form (a, b) is a solution of this equation? 3a – 4b = 21 a. (–3, –2) b. (–2, –3) c. (0, 7) d. (7, 0)

D. (7,0)

Step-by-step explanation:

Our original equation is 3a-4b=21.

The one we will try first is D. (7, 0)

Since we need to plug it in the form of (a,b) here is the equation now:

3(7)-4(0)=21

Now we solve:

3*7=21

4*0=0

Now we have 21-0=21

21-0 does equal 21.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

13.46

step-by-step explanation:

16.80 x .20 = 13.46