You use PEMDAS.
First, parentheses
(x+4) = 4x
(3x+5) = 3x+5
So, that is
4x*3x+5
Then, exponents. We don’t have any.
Then, multiplying.
4x*3x is 12x
So, 12x+5
And then, division. We don’t have anything to divide.
Then, addition and subtraction
You can’t add the variable to a number, so the answer is just
12x+5.
Hope it helped. :)
15 pounds = $36
1 pound = $36/15 = $2.4
24 pounds = $2.4 * 24 = $57.6
1. If y<span>ou have jogged 5 miles from the park at a rate of r miles per hour, then the time you need to do this is

hours (

, where S is distance, v-speed and t-time).
</span>
2. W<span>hen you run back to the park, your average speed increases by 1 mph and become r+1 mph.
</span>
3. I<span>t takes

hours to jog 5 miles back to the park</span>
4. T<span>he total jogging time T is

hours.</span>
<span />
5. If you jogged away from the park at an average speed of 4 miles per hour, then r+1=4 and r=3. The expression

will take look
<span>

hours.</span>
Answer:
y=-1x+3
Step-by-step explanation:
Slope intercept form: y=mx+b
x intercept (3,0)
y intercept (0,3)

start subbing in numbers from one of the points. I'm using hte x intercept so it would be (0,3). m = slope
y=mx+b
3=-1*0+b
3=0+b
b=3
so now that you know what b and the slope is,
y= -1x+3
Setup 2 problems
2x - 7 < 15 and 2x - 7 > -15
2x < 22 2x > -8
x < 11 x > -4
Or you can write it -4 < x < 11