50x30=1500 (this is an approximated rounded answer)
Answer:
C, 3
Step-by-step explanation:
By creating a best line of fit you can get the sets of points (16,50) and (12,40)
Using these to find the slope we can get 
-10/-4 is 2.5 The best approximation would be C, because if you round it up to the nearest number you would get 3.
Since we want to know how much more he needs out of the total, we must do subtraction. Since the only subtraction one is C, The answer is C.
You move the term calculate on both sides and you got -1
Line 1 :
<span>y = 2x + 4 </span>
<span>Passes thro` point (0,4) </span>
<span>Gradient is 2 </span>
<span>Line 2 </span>
<span>y = - 2x + 5 </span>
<span>Passes thro` point (0 , 5) </span>
<span>Gradient is - 2 </span>
<span>Point of intersection given by :- </span>
<span>2x + 4 = - 4x + 10 </span>
<span>6x = 6 </span>
<span>x = 1 </span>
<span>y = 6 </span>
<span>Point is (1,6) </span>
