X intercept only occurs when y=0.
when y=o, and x was positive, x=11
so, your answer is 11
Answer:
6 mph
Step-by-step explanation:
3 miles -----> takes 30 minutes
recall that 30 minutes = 1/2 an hour = 0.5 hours
hence,
3 miles -----> takes 30 minutes = 0.5 hrs
therefore her rate of change (i.e speed) in mph
= number of miles ran ÷ time taken in hours
= 3miles ÷ 0.5hrs
= 6 mph
Answer:
Step-by-step explanation:
f(x) = -5x + 8(7 - x)......when f(x) = 160
160 = -5x + 8(7 - x)
160 = -5x + 56 - 8x
160 - 56 = -5x - 8x
104 = - 13x
-104/13 = x
-8 = x <====