A system of equations consists by of y=x^3 + 5x +1 and y=x. The equations are equal at approximately x=
A)-0.25
B)-0.5
C)0.5
D)0.25

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

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

51840000 cm 2

step-by-step explanation:

c.

step-by-step explanation: