Review
15. solve for p
p=A/(1+rt)
25. determine which relation(s) are functions
1,2,4
38a how tall is the building?
38b max height?
40ft
140ft
36.g. x2+169=0
x=13i, -13i
42f. i54
-1
16. Write an equation for the line that passes through the point (-2,2) and has a slope 1/2 in all three forms
y-2=1/2(x+2)
y=(1/2)x+3
x-2y=-6
26. MC: which is the equation?
A
39a in words, explain what the value of 12 means
36.f. 10x2-15x=0
0, 3/2
42h. (4+i)+(5-9i)
9-8i
24. Find an equation of a line in standard form that passes through (1,-5) and is perpendicular to the line that passes through (2,-2) and (1,4)
point slope form!
y+5=(1/6)(x-1)
33. write the following in vertex form?
hint: h=-b/2a!
y=2(x+3)2-22
39b. in words, what does 230 mean in this equation?
the money she makes just for showing up to work
36.a. 3x2-20x=7
-1/3, 7
42b. (2+i)(4+i)
7+6i
23.b solve and graph. is it AND or OR?
x<11 AND x>-5
27. find the vertex, aos, max/min value, domain, range
(-1,4)
x=-1
y=4(
(-∞,∞)
(-∞,4)
41. find the length and width of the rectangle
l=6, w=4
36.e. 7(x-4)2-2=54
4±2√2
42.l. 15/-i√3
5i√3
18a. solve and check for extraneous solutions
x=1
x=-1 is extraneous
30. what is the quadratic function in standard form for this model?
y=-2x2+16x-25
40. find n
n=7
36.d. 3x2=5
±(√15)/3
42. j. (2-i)/(2+i) in standard form
3/5 - 4i/5