Exercise 6.12 (Solution on p. 113.)
Mr. Boutros wants to invest up to $20,000 in two stocks, Cal Computers and Texas Tools. The Cal
Computers stock is expected to yield a 16% annual return, while the Texas Tools stock promises
a 12% yield. Mr. Boutros would like to earn at least $2,880 this year. According to Value Line
Magazine's safety index (1 highest to 5 lowest), Cal Computers has a safety number of 3 and Texas
Tools has a safety number of 2. How much money should he invest in each to minimize the safety
number? Note: A lower safety number means less risk.

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

the 3rd on is correct

step-by-step explanation: