Answer:
is it like exponets
Step-by-step explanation:
D is a function because there are no repeated x values
for example b is not a function because we have (0,-7) and (0,-9)
The first and the 2nd one are correct because x is 21 and y is 49
3 and 4 at wrong
F(x)=(3x-2)^0.5
C.x is greater than or equal to two thirds
Answer:
10 hours
Step-by-step explanation:
Two boats leave a port at the same time, one going north and the other traveling south.
<u>Southbound boat rate</u> = 40 mph
The northbound boat travels 18 mph faster than the southbound boat.
<u>Northbound boat rate</u> = 40 + 18 = 58 mph
Two boats rate = 40 + 58 = 98 mph (this means they are apart 98 km after one hour)
Total distance = 980 miles
Total rate = 98 mph
Time
hours