What are the partial products of 42times28

Step-by-step explanation:

42 × 48

(40 + 2) × (40 + 8)

40 × (40 + 2) = (40 × 40) + (40 × 2) = 1600 + 80 = 1680

8 × (40 + 2) = (40 × 8) + (2 × 8) = 320 + 16 = 336

Then 1680 + 336 = 2016

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

it has changed from the width and the height.

step-by-step explanation: