1.15 unit test - mth07b

solve for x.

-5(x - 4) = -30

First, simplify the left side of the equation. -5(x-4) can be simplified to -5x+20.

Next, subtract 20 from both sides. The equation is now -5x=-50.

Divide both sides by -5 to isolate x. The answer is x=10.

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.