A terminating decimal means a number that repeats if that helps !
Answer:
a) y = (x+2)/3
b) 5
Step-by-step explanation:
f^-1(x) means "f inverse of x". To find the inverse, we simply:
a ) f(x) = 3x -2
y = 3x - 2 --> because f(x) is the same thing as y
x = 3y - 2 --> to find the inverse, we simply just switch x and y
x + 2 = 3y
y = (x+2)/3
b) f^-1(13)
f^-1(13) = [((13) + 2)/3]
f^-1(13) = (15)/3
f^-1(13) = 5
9514 1404 393
Answer:
$409.86
Step-by-step explanation:
The markup multiplies the cost by 1+65% = 1.65. The tax multiplies the marked-up cost by 1+8% = 1.08. Then the final cost of the tent is ...
($230×1.65)×1.08) = $409.86 . . . total cost
Answer:
Fertilizer B produced a 15% greater yield
Step-by-step explanation:
Mean yield fertilizer A = 20.2
Mean yield fertilizer B = 23.2
Thus, 23.2 − 20.2
20.2
= 0.1485 ≈ 0.15 or 15%
8n-20=15+n
n=5
20 less than 8 times a number = 8(n)-20 same as (=) 15 more (+) than a number(n) 15+n