Solve the following exponential question:

x = - 0.55 ( 2 dec. places )

Step-by-step explanation:

Express as

. 4² - = 7

Factor out from each term

( 4² - 1) = 7

× 15 = 7 ( divide both sides by 15)

=

Take the log ( base 10 ) of both sides

log = log (), thus

x log 4 = log ( ) ( divide both sides by log 4 )

x = - 0.55

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3