Answer:
$65
Step-by-step explanation:
30% of 50 is 15, so 50+15=65.
Answer:
f(x) = 2x^2+5x-12
Step-by-step explanation:
Let h,l, and w represent the height, length, and width of the building respectively
Then



The new value of h = 50m, but l remains the same.
That is l = 10m
Therefore

Hence, the width is 2.5m