Help me with these 3 and explain too thank you :))
1 answer:
Answer:
1) 25
2) 2
3) f(g(1)) = 42
Step-by-step explanation:
1) Given that f(x) = 4x^2 + 9
If x = -2
f(-2) = 4(-2)^2 + 9
f(-2) = 4(4) + 9
f(-2) = 16 + 9
f(-2) = 25
2) Given that f(x) = 4x - 6
y = 4x - 6
Replace y with x
x = 4y - 6
MAke y the subject of the forfmula
4y = x+ 6
y = (x+6)/4
SInce x = 2
f^(-1)(2) = (2+6)/4
f^(-1)(2) = 8/4 = 2
3) If f(x) = 6x and g(x) = x+6
f(g(x)) = f(x+6)
f(x+6) = 6(x+6)
Since x = 1
f(g(1)) = 6(1+6)
f(g(1)) = 6(7)
f(g(1)) = 42
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Answer:
A
Step-by-step explanation:
The better deal is the 21-ounce one because its unit rate equals less than the 17-ounce one
Step-by-step explanation:
Simple first we will multiply
2.5 x 48 = 120 ounces
1 pound = 16 ounces
120 ounces = 120 ÷ 16 = 7.5 pounds
Option A is the correct answer
Answer:
Larger is -30
Smaller is -20
Step-by-step explanation:
-50/2 = -25
difference is -10
add 5 to one number minus 5 from the other
so
-25 - 5 = -30
-25 + 5 = -20
Hope this helps :)
Acceleration = change in velocity / time
a: acceleration
Vf: final velocity
Vi: initial velocity
t: time
a = (Vf - Vi) / t
a = (3.3 - 0) / 15
a = 0.22 m/s^2
