Answer:
135 meters
Step-by-step explanation:
h = 60t - 5t²
t is in seconds and it says to find out the height after 3 seconds
Sub the value '3' into 't'
h = 60(3) - 5(3)²
h = 180 - 5(9)
h = 180 - 45
h = 135 m
Answer: 56
Just trust me I had this question on a quiz
66n-31m
26n-7m+4(10n-6m)
26n-7m+40n-24m
18
3x6=18
Hope this helps!
19 is the answer i think.