25% of $75.50 is 18.87, so.... you would save $18.87
X+y=7
X-y=3
_____
2x. =10
2x/2=10/2
X=5
Answer:
The first one
Step-by-step explanation:
Might be wrong sorry
Answer:
a) y=5ˣ-3
b) y=5ˣ⁻²
c) y=5^(x+1/2)
d) y=5^(x+2.5)+1
Step-by-step explanation:
b: vertical stretch or compression and reflection across x-axis
a: horizontal stretch or compression and reflection across y-axis
h: horizontal shift (left and right)
k: vertical shift (up and down)
a) y=5ˣ-3
b) y=5ˣ⁻²
c) y=5^(x+1/2)
d) y=5^(x+2.5)+1
First assume that the football is going straight up, that is important. next you have a good rate problem here. So you have y = mx + b, where m is the rate and b is the starting point. Now plug in data m is 45 ft/s and b = 2.5ft, so the equation is y = 45x + 2.5. Now the ball was caught at 5.5 so put that in for y. 5.5 = 45x + 2.5. Solve to get 1/9 of a sec.
