Laboratory tests show that the lives of

light bulbs are normally distributed with

a mean of 750 hours and a standard

deviation of 75 hours. Find the

probability that a randomly selected

light bulb will last between 600 and 750

hours.

[? ]%

What is the solution to the equation square root 5x-7 = square root 3x+5

Is polygon always a plane figure?

A rectangle warehouse will have 5000 square feet of floor space and will be separated into two rectangular rooms by an interior wall. The cost of the exterior walls is $150 per linear foot and the cost of the interior wall is $100 per linear foot.

What restrictions may be necessary to the domain and range of linear equations?

Solve the equation 4=t/2.5 t=

You are planning a 420 mile trip. You will drive at a rate of 60 mph. After 2 hours of driving you stop for 15 minutes. After two more hours, you will stop for 30 minutes to eat. Two hours later, you will stop for 15 minutes again.

The results from spinning a spinner multiple times are given in the table below. Color Frequency blue 17 yellow 14 green 13 red 9 purple 17 What is the experimental probability of spinning purple? A 17/43 B 17/50 C 17/70 D 17/60

Does the graph represent a function? Why or why not? -10

Simplify the following expression. (1/7x+3/8) + (2/9x-1/8)

At the beginning of a month your account balance was $53. During the month you deposited $562 and wrote a check for $486. What was your balance at the end of the month