imheretosavetheday

3a. Do you know slope-intercept form? It is the form of a linear equation y=mx+ b. The b is a constant, which is also the y-intercept. So, can you take it from here?

3b. Think of a vertex form equation: y= a(x-h)^2 + k. k determines the y-intercept, while h determines the horizontal shift. I believe you should be able to take it from here.

1. The first statement shows that 5000 + x/100 * 5000 + (x/100)^2 * 5000 ... (x/100)^6 *5000 = 10000. I believe you can solve that. Then, plug it on the 300 dollars, which will look like 300 + x/100 * 300 + (x/100)^2 * 300 .... (x/100)^n * 300 = 9600, where n is number you are looking for.

2. Unclear of what you are asking for. If you are asking for $3^{2c+1} = 28\cdot 3^{c-9}$, the answer is in some really ugly ln form. If you are asking for $3^2 c + 1 = 28 \cdot 3^c -9,$ then it is also really ugly. Please specify what your equation is asking for.

6sqrt 2 ^2 / 2 = 36, by 45-45-90 triangles

1. $\text{We can use an integral: } \int^{2}_{-1}( x^3 + 2) dx = ? \text{ We now find the antiderivative of } x^3+2\\ \text{which turns out to be } \frac{1}{4} x^4 \text{. Then, we plug it in:} \frac{1}{4}(2)^4 - \frac{1}{4}(-1^4) = \frac{17}{4}.$

2. $\text{We use another integral: } \int^{3\pi/4}_{0} \sin x \: dx. \text{Take the antiderivative of }\sin x \text{, which is just }-\cos x. \text{Thus, the answer is }\\ -\cos(\frac{3\pi}{4}) - ( -\cos 0) = \frac{\sqrt{2}}{2} + 1.$

i would assume so

i don't think i made a mistake there.... check the graph again....

you can use a calculator to check, you know

ok, no need to say it's due tmrw, cuz this is an aops thing

the solution:

Let's say that the radius is equal to r. Let's say the midpoint of CD is P. Then, we know that PC= 9. Draw OP, and notice that OP is perpendicular to CD. Also, since $\angle ABD$ = 90, that means that AOPB is a rectangle, which implies AB=OP= 12. Using the pythagorean theorem, the radius is equal to $\sqrt{9^2 + 12^2}, \text{which is equal to } \boxed{15}$. Just use pi r ^2 to find the area, which is 225 pi

7. arcsin 7/15 = 27.818

8. arccos 8/25 = 57.769

a. when x = (-6, -3) and (3,13)

b. when x = ($-\infty$, -6) and (-3,3)

c. when x= (0,4) and (-8, -4)

d. when x = (4,13) and (-4,0)

e. when x =($-\infty$,-8)

f.the domain is when x = ($-\infty$,13) and the range is when y = (-9,7)

1. Undefined, as 0^0 is still being debated. Otherwise, it would be geometric, because it is the sequence 0^0, 1^1, 2^2, 3^3

2. This is an arithmetic sequence because each term decreases by 1.5.

3. Neither, as this can be recursively defined as something with even/odd cases.

5. I think neither, as it each term decreases by n+1

nonzero digits are significant, so it would be 20cm and 506.7cm

a. The positive parts are -6

b. The negative parts are -3

c.It is increasing at -8

d. decreasing at 4

e. The constant part is x<-6

f.The domain of the function is x<=13. The range of the function is -9<=y<=7.