Find the discriminate
y=2x^2+9x

I put 81, am I correct?

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees

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a. do i have the cash i need for down payment?

b. do i want to use my savings instead of credit?

c. can i afford the car?

d. can i use the credit in a better way?

e. could i put off buying the car for a while?

f. what will happen if i don't buy it now?

g. what are the costs of using credit?

hope this (: