The graph shows changes over time in a population of bacteria added to a test tube of growth
medium. What activity characterizes the growth cycle during phase 2?
Bacteria are dividing regularly by binary fission
Which of the following is a true principle of inertia?
It is proportional to the mass of an object.
Which human system contains the thyroid gland?
Endocrine
At an airport, 25% of the flights arrive from within the state, 35% from out of state, and the rest
from other countries. How many flights arrived from out of state if a total of 240 flights arrive?
84
Equation to find the percent of a number
make the percentage a decimal (35% = 0.35 or 79% = 0.79) then forget the decimal and
multiply the percentage by the number you are trying to get a percentage from (35 x 240 =
8,400) then move the answer back the same number of decimal points you had before which in
this case would be two (8,400 to 84.00) 84 is your answer.
A friend gives a neighbor 13 2/3 feet of twine from a brand new spool, leaving 38 2/5 feet of
spine on the spool. How many feet of twine were originally on the spool?
52 1/15
If an employee invests 5% of his pre-tax salary into a retirement plan, the company will match
25% of that amount. How much will the company contribute to the plan if the employee earns
$50,000 before taxes?
625
Two tanks are each partially filled with 96 gallons of water, as shown in the illustration. Tank A is
4/5 full, and Tank B is 2/3 full. What is the maximum amount of water that can be held in both
tanks together?
264 (/5, 80%, or 0.80 = 120) and (/3, 66%, or 0.66 = 144) (144 + 120 = 264)
, A wooden box is 1 foot high, 3 feet wide, and 5 feet long. Bob is going to use it for a table top
and plans to paint the 4 sides and the top. How many square feet will be painted?
31
What is the approximate surface area of a box that is 8 inches wide, 12 inches long, and 9
inches tall?
552 ( 2(lw + lh + hw) )
A structure in 1:20 scale drawing has a height of 36 cm. If the ratio of the height of the structure
to the width is 4:1 What is the width of the actual structure, to the nearest tenth of a meter?
1.8
Julia earns $68,000 per year and wants to begin investing her money. She figures she can
afford to invest 40% of her annual salary. Of that, 60% will be invested in corporate bonds, while
40% will be invested into securities. If the corporate bonds and securities yield 7% and 12%
annual interest, respectively, how much interest will Julia earn in 1 year.
$2,448
A $15 minimum payment was made on a credit card balance of $480. The card was not used
the following month, but the new statement showed an ending balance of $548.70 What percent
is the credit card company charging to carry the balance?
18%
Maria exercises for 1 5/6 every Saturday. If she runs for 3/4 of that time, how many hours does
she run each Saturday?
1 3/8
A decorator removes equal-sized corners from a rectangular piece of fabric to create a
tablecloth, as shown in the illustration. What is the area of the tablecloth?
24 square feet
Zeke and Brandon each get $5 from their grandmother every Saturday. After 13 weeks, Zeke
had a total of $13, and Brandon had $55. Approximately what percent of his 13-week allowance
did Zeke spend?
80%