Alfred is practicing typing. the first time he tested himself, he could type 45 words per minute. after practicing for a week, he could type 48 words per minute. after two weeks he could type 51 words per minute. based on this pattern, predict how fast alfred will be able to type after 4 weeks of practice.

Let x represent weeks and let y represent his words per minute.

x=week - y=words/minute
0 week  -    45 words/min
1 week   -    48 words/min
2 weeks-    51 words/min        
3 weeks-    54 words/min
4 weeks-    57 words/min

The pattern is: as x goes up by 1, y increases by 3. Therefore, by continuing the pattern, after 4 weeks of practice, Alfred will be able to type 57 words/minute.

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5