I need help ASAP for A or all. PLEASE and THANKS

as follow

Step-by-step explanation:

a the exchane rate is approximated by 19/23 is around 0.82..

b 23 NZD = 19 CAD

so, 1 NZD = 19/23 CAD

880 NZD = 19/23 × 880 CAD

880 NZD = 727

c 1 NZD = 0.8275 CAD

0.8275 CAD = 1 NZD

1 CAD = 1/0.8275 NZD

129 CAD = 129 × 1/0.8275

= 129/0.8275

= 155.9 or around 156

you can check the unit 10c again

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752