F(x) = -x^2 + 3x + 8
f'(x) = -2x + 3
when f(x) is increasing f'(x) > 0
-2x + 3 > 0
-2x > -3
x < 3/2 or 1.5
So the required interval is (-infinity,1.5).The first choice.
Each coordinate is plotted in the graph below. The shape is a quadrilateral and has a pair of parallel lines. The shape is a trapezoid.
Answer:
107%
Step-by-step explanation:
Emma spending 7% more on the sweater than the shoes can be represented by x + 7%, where x is the price of the shoes.
The shoes are worth 100%, or one whole, because you can't buy half a shoe or more than one whole shoe, etc.
So to find how much more the sweater is, add 100% to 7%, or how much more the sweater is.
100% + 7% = 107%
The cost of the sweater is 107% of the cost of the shoes.
Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.
First, add 10 to both sides
-6 (+10) = n/2 - 10 (+10)
10 - 6 = n/2
4 = n/2
Next, isolate the n. Multiply 2 to both sides
4(2) = n/2(2)
n = 4(2)
n = 8
8 is your answer
hope this helps
