What is the value of f ( − 3a ), if f ( x ) = 2x 2 + 4x ?

select one:
a. 9a 2 - 12a
b. 4a 2 - 9a
c. 18a 2 - a
d. 18a 2 - 12a

Determine whether triangle tjd is congruent to triangle sek  givent (-4,-2), j (0,5), d (1,-1), s (-1,3), e (3,10), k (4,4)and explain the reason.  select one: a. yes, by sssb. no, by aasc. no, by asad. yes, by sas

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books