Which is the solution set of the compound inequality? –4 < a + 2 < 10

First, subtract 2 from both sides.
You get: -6<a<8

To test it out substitute -6 and 8 in. Because they are ON the margin not IN it, the answer is:

-6<a<8

Ibelieve a is the correct answer because 3 is the y-intercept you can see it from the graph. so from here the answers could only be a and c. they are differently at the sign.substitute x with 1so the equation for a is 3*(1.4)^x3*(1.4)^1 = 4.2look back at the graph it is true that when x= 1 y= 4.2if you use equation from c. when x= 1 then y will be negative number which is falseso correct answer is a

The amount used= 13.04- 1.9 = 11.14