3 + jk - k when j = 2 and k = 6.

15

Step-by-step explanation:

Replace j and k with their values:

3 + (2)(6) -6

Following Pedmas, multiply first:

3 + 12 -6

Now add and subtract do the final

3 + 12-6 = 9

The answer is 9

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p